31253520479 has 16 divisors (see below), whose sum is σ = 31672620000. Its totient is φ = 30837966720.

The previous prime is 31253520433. The next prime is 31253520481. The reversal of 31253520479 is 97402535213.

It is a cyclic number.

It is not a de Polignac number, because 31253520479 - 2¹⁶ = 31253454943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31253520499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16793009 + ... + 16794869.

It is an arithmetic number, because the mean of its divisors is an integer number (1979538750).

Almost surely, 2^31253520479 is an apocalyptic number.

31253520479 is a deficient number, since it is larger than the sum of its proper divisors (419099521).

31253520479 is a wasteful number, since it uses less digits than its factorization.

31253520479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 31253520479 in words is "thirty-one billion, two hundred fifty-three million, five hundred twenty thousand, four hundred seventy-nine".