31313021102 has 16 divisors (see below), whose sum is σ = 52489234224. Its totient is φ = 13886040000.

The previous prime is 31313021057. The next prime is 31313021119. The reversal of 31313021102 is 20112031313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17356649 + ... + 17358452.

It is an arithmetic number, because the mean of its divisors is an integer number (3280577139).

Almost surely, 2^31313021102 is an apocalyptic number.

31313021102 is a deficient number, since it is larger than the sum of its proper divisors (21176213122).

31313021102 is a wasteful number, since it uses less digits than its factorization.

31313021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34715155.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31313021102 its reverse (20112031313), we get a palindrome (51425052415).

The spelling of 31313021102 in words is "thirty-one billion, three hundred thirteen million, twenty-one thousand, one hundred two".