31613607 has 6 divisors (see below), whose sum is σ = 45664112. Its totient is φ = 21075732.

The previous prime is 31613581. The next prime is 31613623. The reversal of 31613607 is 70631613.

It is not a de Polignac number, because 31613607 - 2¹⁰ = 31612583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31613627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1756303 + ... + 1756320.

Almost surely, 2^31613607 is an apocalyptic number.

31613607 is a deficient number, since it is larger than the sum of its proper divisors (14050505).

31613607 is a wasteful number, since it uses less digits than its factorization.

31613607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512629 (or 3512626 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 31613607 is about 5622.5978870981. The cubic root of 31613607 is about 316.1971977231.

The spelling of 31613607 in words is "thirty-one million, six hundred thirteen thousand, six hundred seven".