31021116631004 has 48 divisors (see below), whose sum is σ = 56936886988800. Its totient is φ = 14760343635840.

The previous prime is 31021116630997. The next prime is 31021116631031. The reversal of 31021116631004 is 40013661112013.

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, 228983672 + ... + 229119104.

It is an arithmetic number, because the mean of its divisors is an integer number (1186185145600).

Almost surely, 2^{31021116631004} is an apocalyptic number.

It is an amenable number.

31021116631004 is a deficient number, since it is larger than the sum of its proper divisors (25915770357796).

31021116631004 is a wasteful number, since it uses less digits than its factorization.

31021116631004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148170 (or 148168 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 31021116631004 its reverse (40013661112013), we get a palindrome (71034777743017).

The spelling of 31021116631004 in words is "thirty-one trillion, twenty-one billion, one hundred sixteen million, six hundred thirty-one thousand, four".