31241320402012 has 18 divisors (see below), whose sum is σ = 63598402247352. Its totient is φ = 13389137315064.

The previous prime is 31241320401979. The next prime is 31241320402049. The reversal of 31241320402012 is 21020402314213.

It is a super-2 number, since 2×31241320402012² (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 5 ways as a sum of consecutive naturals, for example, 79697245728 + ... + 79697246119.

Almost surely, 2^{31241320402012} is an apocalyptic number.

It is an amenable number.

31241320402012 is an abundant number, since it is smaller than the sum of its proper divisors (32357081845340).

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

31241320402012 is a wasteful number, since it uses less digits than its factorization.

31241320402012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159394491865 (or 159394491856 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31241320402012 its reverse (21020402314213), we get a palindrome (52261722716225).

The spelling of 31241320402012 in words is "thirty-one trillion, two hundred forty-one billion, three hundred twenty million, four hundred two thousand, twelve".