31256224053213 has 32 divisors (see below), whose sum is σ = 43159224176640. Its totient is φ = 20104926589440.

The previous prime is 31256224053211. The next prime is 31256224053217. The reversal of 31256224053213 is 31235042265213.

It is not a de Polignac number, because 31256224053213 - 2¹ = 31256224053211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31256224053211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28630873 + ... + 29702513.

It is an arithmetic number, because the mean of its divisors is an integer number (1348725755520).

Almost surely, 2^{31256224053213} is an apocalyptic number.

It is an amenable number.

31256224053213 is a deficient number, since it is larger than the sum of its proper divisors (11903000123427).

31256224053213 is a wasteful number, since it uses less digits than its factorization.

31256224053213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073877.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 31256224053213 in words is "thirty-one trillion, two hundred fifty-six billion, two hundred twenty-four million, fifty-three thousand, two hundred thirteen".