31257031323 has 16 divisors (see below), whose sum is σ = 49166206976. Its totient is φ = 17284993920.

The previous prime is 31257031321. The next prime is 31257031327. The reversal of 31257031323 is 32313075213.

It is not a de Polignac number, because 31257031323 - 2¹ = 31257031321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31257031321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24006286 + ... + 24007587.

It is an arithmetic number, because the mean of its divisors is an integer number (3072887936).

Almost surely, 2^31257031323 is an apocalyptic number.

31257031323 is a deficient number, since it is larger than the sum of its proper divisors (17909175653).

31257031323 is a wasteful number, since it uses less digits than its factorization.

31257031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48013914.

The product of its (nonzero) digits is 11340, while the sum is 30.

The spelling of 31257031323 in words is "thirty-one billion, two hundred fifty-seven million, thirty-one thousand, three hundred twenty-three".