100023312031 has 4 divisors (see below), whose sum is σ = 100026985032. Its totient is φ = 100019639032.

The previous prime is 100023311939. The next prime is 100023312041. The reversal of 100023312031 is 130213320001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100023312031 - 2²³ = 100014923423 is a prime.

It is a super-2 number, since 2×100023312031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100023311996 and 100023312014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023312041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795345 + ... + 1850218.

It is an arithmetic number, because the mean of its divisors is an integer number (25006746258).

Almost surely, 2^100023312031 is an apocalyptic number.

100023312031 is a deficient number, since it is larger than the sum of its proper divisors (3673001).

100023312031 is an equidigital number, since it uses as much as digits as its factorization.

100023312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673000.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 100023312031 its reverse (130213320001), we get a palindrome (230236632032).

The spelling of 100023312031 in words is "one hundred billion, twenty-three million, three hundred twelve thousand, thirty-one".