100023431031 has 24 divisors (see below), whose sum is σ = 145563600000. Its totient is φ = 66181678992.

The previous prime is 100023431023. The next prime is 100023431089. The reversal of 100023431031 is 130134320001.

It is not a de Polignac number, because 100023431031 - 2³ = 100023431023 is a prime.

It is a super-2 number, since 2×100023431031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100023430995 and 100023431013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023432031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4641720 + ... + 4663218.

It is an arithmetic number, because the mean of its divisors is an integer number (6065150000).

Almost surely, 2^100023431031 is an apocalyptic number.

100023431031 is a deficient number, since it is larger than the sum of its proper divisors (45540168969).

100023431031 is a wasteful number, since it uses less digits than its factorization.

100023431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25363 (or 25360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 100023431031 its reverse (130134320001), we get a palindrome (230157751032).

The spelling of 100023431031 in words is "one hundred billion, twenty-three million, four hundred thirty-one thousand, thirty-one".