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23131110424 = 2312312348813
BaseRepresentation
bin10101100010101110…
…001011110000011000
32012201001021011021111
4111202232023300120
5334333031013144
614343135550104
71446132123502
oct254256136030
965631234244
1023131110424
11989a9aa694
12459668b334
1322482a61b6
14119609ad72
15905aac534
hex562b8bc18

23131110424 has 16 divisors (see below), whose sum is σ = 43406082720. Its totient is φ = 11556155040.

The previous prime is 23131110407. The next prime is 23131110427. The reversal of 23131110424 is 42401113132.

It is a junction number, because it is equal to n+sod(n) for n = 23131110395 and 23131110404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131110427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164559 + ... + 1184254.

It is an arithmetic number, because the mean of its divisors is an integer number (2712880170).

Almost surely, 223131110424 is an apocalyptic number.

It is an amenable number.

23131110424 is a deficient number, since it is larger than the sum of its proper divisors (20274972296).

23131110424 is a wasteful number, since it uses less digits than its factorization.

23131110424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350050 (or 2350046 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 23131110424 its reverse (42401113132), we get a palindrome (65532223556).

The spelling of 23131110424 in words is "twenty-three billion, one hundred thirty-one million, one hundred ten thousand, four hundred twenty-four".

Divisors: 1 2 4 8 1231 2462 4924 9848 2348813 4697626 9395252 18790504 2891388803 5782777606 11565555212 23131110424