Search a number
-
+
23223131020 = 2251161156551
BaseRepresentation
bin10101101000001101…
…001101101110001100
32012221110102021210201
4111220031031232030
5340030110143040
614400224143244
71451330233225
oct255015155614
965843367721
1023223131020
119937941071
124601467b24
132261384a5b
1411a43b224c
1590dbd7a9a
hex56834db8c

23223131020 has 12 divisors (see below), whose sum is σ = 48768575184. Its totient is φ = 9289252400.

The previous prime is 23223131011. The next prime is 23223131021. The reversal of 23223131020 is 2013132232.

It is not an unprimeable number, because it can be changed into a prime (23223131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580578256 + ... + 580578295.

It is an arithmetic number, because the mean of its divisors is an integer number (4064047932).

Almost surely, 223223131020 is an apocalyptic number.

23223131020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23223131020 is an abundant number, since it is smaller than the sum of its proper divisors (25545444164).

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

23223131020 is a wasteful number, since it uses less digits than its factorization.

23223131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161156560 (or 1161156558 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23223131020 its reverse (2013132232), we get a palindrome (25236263252).

The spelling of 23223131020 in words is "twenty-three billion, two hundred twenty-three million, one hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 1161156551 2322313102 4644626204 5805782755 11611565510 23223131020