31672613 has 8 divisors (see below), whose sum is σ = 36232320. Its totient is φ = 27121680.

The previous prime is 31672609. The next prime is 31672621. The reversal of 31672613 is 31627613.

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 31672613 - 2² = 31672609 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 (31672673) 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, 10328 + ... + 13038.

It is an arithmetic number, because the mean of its divisors is an integer number (4529040).

Almost surely, 2^31672613 is an apocalyptic number.

It is an amenable number.

31672613 is a deficient number, since it is larger than the sum of its proper divisors (4559707).

31672613 is a wasteful number, since it uses less digits than its factorization.

31672613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387.

The product of its digits is 4536, while the sum is 29.

The square root of 31672613 is about 5627.8426594922. The cubic root of 31672613 is about 316.3938001537.

The spelling of 31672613 in words is "thirty-one million, six hundred seventy-two thousand, six hundred thirteen".