31013497685 has 8 divisors (see below), whose sum is σ = 37259832120. Its totient is φ = 24781708224.

The previous prime is 31013497661. The next prime is 31013497687. The reversal of 31013497685 is 58679431013.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 386397649 + 30627100036 = 19657^2 + 175006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31013497685 - 2⁸ = 31013497429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013497687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631550 + ... + 3640079.

It is an arithmetic number, because the mean of its divisors is an integer number (4657479015).

Almost surely, 2^31013497685 is an apocalyptic number.

It is an amenable number.

31013497685 is a deficient number, since it is larger than the sum of its proper divisors (6246334435).

31013497685 is an equidigital number, since it uses as much as digits as its factorization.

31013497685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7272487.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 31013497685 in words is "thirty-one billion, thirteen million, four hundred ninety-seven thousand, six hundred eighty-five".