31261536125260 has 96 divisors (see below), whose sum is σ = 77649978365568. Its totient is φ = 10349017989120.

The previous prime is 31261536125249. The next prime is 31261536125311. The reversal of 31261536125260 is 6252163516213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27516729 + ... + 28630288.

It is an arithmetic number, because the mean of its divisors is an integer number (808853941308).

Almost surely, 2^{31261536125260} is an apocalyptic number.

It is an amenable number.

31261536125260 is an abundant number, since it is smaller than the sum of its proper divisors (46388442240308).

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

31261536125260 is a wasteful number, since it uses less digits than its factorization.

31261536125260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56147171 (or 56147169 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 31261536125260 in words is "thirty-one trillion, two hundred sixty-one billion, five hundred thirty-six million, one hundred twenty-five thousand, two hundred sixty".