31261425424 has 20 divisors (see below), whose sum is σ = 61561948300. Its totient is φ = 15374471040.

The previous prime is 31261425421. The next prime is 31261425473. The reversal of 31261425424 is 42452416213.

It can be written as a sum of positive squares in 2 ways, for example, as 6307536400 + 24953889024 = 79420^2 + 157968^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31261425424.

It is not an unprimeable number, because it can be changed into a prime (31261425421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16014099 + ... + 16016050.

It is an arithmetic number, because the mean of its divisors is an integer number (3078097415).

Almost surely, 2^31261425424 is an apocalyptic number.

It is an amenable number.

31261425424 is a deficient number, since it is larger than the sum of its proper divisors (30300522876).

31261425424 is a wasteful number, since it uses less digits than its factorization.

31261425424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32030218 (or 32030212 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The spelling of 31261425424 in words is "thirty-one billion, two hundred sixty-one million, four hundred twenty-five thousand, four hundred twenty-four".