31209694485 has 16 divisors (see below), whose sum is σ = 49937718336. Its totient is φ = 16644434688.

The previous prime is 31209694471. The next prime is 31209694489. The reversal of 31209694485 is 58449690213.

It is not a de Polignac number, because 31209694485 - 2¹⁰ = 31209693461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31209694489) 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, 576762 + ... + 628548.

It is an arithmetic number, because the mean of its divisors is an integer number (3121107396).

Almost surely, 2^31209694485 is an apocalyptic number.

It is an amenable number.

31209694485 is a deficient number, since it is larger than the sum of its proper divisors (18728023851).

31209694485 is a wasteful number, since it uses less digits than its factorization.

31209694485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91972.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 31209694485 in words is "thirty-one billion, two hundred nine million, six hundred ninety-four thousand, four hundred eighty-five".