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130131323020 = 22543271503713
BaseRepresentation
bin111100100110001101…
…1100110100010001100
3110102220002001010221101
41321030123212202030
54113002104314040
6135440445512444
712254526665206
oct1711433464214
9412802033841
10130131323020
1150208815056
1221278872724
13c36b16456a
146426ad1776
1535b965409a
hex1e4c6e688c

130131323020 has 24 divisors (see below), whose sum is σ = 273339116064. Its totient is φ = 52040464896.

The previous prime is 130131323011. The next prime is 130131323027. The reversal of 130131323020 is 20323131031.

It is a super-2 number, since 2×1301313230202 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130131323027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665317 + ... + 838396.

It is an arithmetic number, because the mean of its divisors is an integer number (11389129836).

Almost surely, 2130131323020 is an apocalyptic number.

130131323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130131323020 is an abundant number, since it is smaller than the sum of its proper divisors (143207793044).

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

130131323020 is a wasteful number, since it uses less digits than its factorization.

130131323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508049 (or 1508047 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 130131323020 its reverse (20323131031), we get a palindrome (150454454051).

The spelling of 130131323020 in words is "one hundred thirty billion, one hundred thirty-one million, three hundred twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 4327 8654 17308 21635 43270 86540 1503713 3007426 6014852 7518565 15037130 30074260 6506566151 13013132302 26026264604 32532830755 65065661510 130131323020