31231231230975 has 48 divisors (see below), whose sum is σ = 51673197620352. Its totient is φ = 16644542866560.

The previous prime is 31231231230973. The next prime is 31231231231019. The reversal of 31231231230975 is 57903213213213.

It is not a de Polignac number, because 31231231230975 - 2¹ = 31231231230973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231231230973) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1185367752 + ... + 1185394098.

It is an arithmetic number, because the mean of its divisors is an integer number (1076524950424).

Almost surely, 2^{31231231230975} is an apocalyptic number.

31231231230975 is a deficient number, since it is larger than the sum of its proper divisors (20441966389377).

31231231230975 is a wasteful number, since it uses less digits than its factorization.

31231231230975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37256 (or 37251 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The spelling of 31231231230975 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred thirty-one million, two hundred thirty thousand, nine hundred seventy-five".