31023131031102 has 64 divisors (see below), whose sum is σ = 76377983109120. Its totient is φ = 8201953849824.

The previous prime is 31023131031091. The next prime is 31023131031127. The reversal of 31023131031102 is 20113013132013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 452013408 + ... + 452082035.

It is an arithmetic number, because the mean of its divisors is an integer number (1193405986080).

Almost surely, 2^{31023131031102} is an apocalyptic number.

31023131031102 is an abundant number, since it is smaller than the sum of its proper divisors (45354852078018).

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

31023131031102 is a wasteful number, since it uses less digits than its factorization.

31023131031102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904095517.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31023131031102 its reverse (20113013132013), we get a palindrome (51136144163115).

The spelling of 31023131031102 in words is "thirty-one trillion, twenty-three billion, one hundred thirty-one million, thirty-one thousand, one hundred two".