31613347507 has 8 divisors (see below), whose sum is σ = 36153947232. Its totient is φ = 27078849600.

The previous prime is 31613347477. The next prime is 31613347517. The reversal of 31613347507 is 70574331613.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31613347507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31613347507.

It is not an unprimeable number, because it can be changed into a prime (31613347517) 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, 1514344 + ... + 1535077.

It is an arithmetic number, because the mean of its divisors is an integer number (4519243404).

Almost surely, 2^31613347507 is an apocalyptic number.

31613347507 is a deficient number, since it is larger than the sum of its proper divisors (4540599725).

31613347507 is a wasteful number, since it uses less digits than its factorization.

31613347507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050909.

The product of its (nonzero) digits is 158760, while the sum is 40.

The spelling of 31613347507 in words is "thirty-one billion, six hundred thirteen million, three hundred forty-seven thousand, five hundred seven".