31013332985 has 16 divisors (see below), whose sum is σ = 39468902400. Its totient is φ = 23313451776.

The previous prime is 31013332981. The next prime is 31013332991. The reversal of 31013332985 is 58923331013.

It is a cyclic number.

It is not a de Polignac number, because 31013332985 - 2² = 31013332981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31013332981) 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, 242105 + ... + 347334.

It is an arithmetic number, because the mean of its divisors is an integer number (2466806400).

Almost surely, 2^31013332985 is an apocalyptic number.

It is an amenable number.

31013332985 is a deficient number, since it is larger than the sum of its proper divisors (8455569415).

31013332985 is a wasteful number, since it uses less digits than its factorization.

31013332985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590080.

The product of its (nonzero) digits is 58320, while the sum is 38.

Adding to 31013332985 its reverse (58923331013), we get a palindrome (89936663998).

The spelling of 31013332985 in words is "thirty-one billion, thirteen million, three hundred thirty-two thousand, nine hundred eighty-five".