31397530363 has 4 divisors (see below), whose sum is σ = 31675384728. Its totient is φ = 31119676000.

The previous prime is 31397530321. The next prime is 31397530379. The reversal of 31397530363 is 36303579313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31397530363 - 2³³ = 22807595771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31397530303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138927013 + ... + 138927238.

It is an arithmetic number, because the mean of its divisors is an integer number (7918846182).

Almost surely, 2^31397530363 is an apocalyptic number.

31397530363 is a deficient number, since it is larger than the sum of its proper divisors (277854365).

31397530363 is a wasteful number, since it uses less digits than its factorization.

31397530363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277854364.

The product of its (nonzero) digits is 459270, while the sum is 43.

The spelling of 31397530363 in words is "thirty-one billion, three hundred ninety-seven million, five hundred thirty thousand, three hundred sixty-three".