31321313302012 has 24 divisors (see below), whose sum is σ = 58987969997040. Its totient is φ = 14497811362560.

The previous prime is 31321313301919. The next prime is 31321313302049. The reversal of 31321313302012 is 21020331312313.

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, 3775467562 + ... + 3775475857.

It is an arithmetic number, because the mean of its divisors is an integer number (2457832083210).

Almost surely, 2^{31321313302012} is an apocalyptic number.

It is an amenable number.

31321313302012 is a deficient number, since it is larger than the sum of its proper divisors (27666656695028).

31321313302012 is a wasteful number, since it uses less digits than its factorization.

31321313302012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550943501 (or 7550943499 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31321313302012 its reverse (21020331312313), we get a palindrome (52341644614325).

The spelling of 31321313302012 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirteen million, three hundred two thousand, twelve".