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23130103320020 = 2255520120950801
BaseRepresentation
bin1010100001001011001011…
…00101111000110111010100
310000220012211200002020011002
411100211211211320313110
511012430422422220040
6121105453415202432
74605044344163624
oct520454545706724
9100805750066132
1023130103320020
117408470361794
122716928976418
13cba20c222168
1459d708236884
152a1a0154ba15
hex150965978dd4

23130103320020 has 24 divisors (see below), whose sum is σ = 48574099224168. Its totient is φ = 9251873280000.

The previous prime is 23130103320019. The next prime is 23130103320059. The reversal of 23130103320020 is 2002330103132.

It can be written as a sum of positive squares in 4 ways, for example, as 3281706156304 + 19848397163716 = 1811548^2 + 4455154^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23130103319974 and 23130103320001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9371381 + ... + 11579420.

It is an arithmetic number, because the mean of its divisors is an integer number (2023920801007).

Almost surely, 223130103320020 is an apocalyptic number.

23130103320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23130103320020 is an abundant number, since it is smaller than the sum of its proper divisors (25443995904148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23130103320020 is a wasteful number, since it uses less digits than its factorization.

23130103320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21006011 (or 21006009 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23130103320020 its reverse (2002330103132), we get a palindrome (25132433423152).

The spelling of 23130103320020 in words is "twenty-three trillion, one hundred thirty billion, one hundred three million, three hundred twenty thousand, twenty".

Divisors: 1 2 4 5 10 20 55201 110402 220804 276005 552010 1104020 20950801 41901602 83803204 104754005 209508010 419016020 1156505166001 2313010332002 4626020664004 5782525830005 11565051660010 23130103320020