100321223031 has 8 divisors (see below), whose sum is σ = 148624034160. Its totient is φ = 66880815336.

The previous prime is 100321222999. The next prime is 100321223077. The reversal of 100321223031 is 130322123001.

It is not a de Polignac number, because 100321223031 - 2⁵ = 100321222999 is a prime.

It is a super-2 number, since 2×100321223031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100321222995 and 100321223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100321323031) 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, 1857800400 + ... + 1857800453.

It is an arithmetic number, because the mean of its divisors is an integer number (18578004270).

Almost surely, 2^100321223031 is an apocalyptic number.

100321223031 is a deficient number, since it is larger than the sum of its proper divisors (48302811129).

100321223031 is an equidigital number, since it uses as much as digits as its factorization.

100321223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715600862 (or 3715600856 counting only the distinct ones).

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

Adding to 100321223031 its reverse (130322123001), we get a palindrome (230643346032).

The spelling of 100321223031 in words is "one hundred billion, three hundred twenty-one million, two hundred twenty-three thousand, thirty-one".