31223030403102 has 32 divisors (see below), whose sum is σ = 63220733791488. Its totient is φ = 10278653172096.

The previous prime is 31223030403091. The next prime is 31223030403139. The reversal of 31223030403102 is 20130403032213.

It is a super-2 number, since 2×31223030403102² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9654618 + ... + 12476285.

It is an arithmetic number, because the mean of its divisors is an integer number (1975647930984).

Almost surely, 2^{31223030403102} is an apocalyptic number.

31223030403102 is an abundant number, since it is smaller than the sum of its proper divisors (31997703388386).

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

31223030403102 is a wasteful number, since it uses less digits than its factorization.

31223030403102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22133824.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31223030403102 its reverse (20130403032213), we get a palindrome (51353433435315).

The spelling of 31223030403102 in words is "thirty-one trillion, two hundred twenty-three billion, thirty million, four hundred three thousand, one hundred two".