31961713 has 8 divisors (see below), whose sum is σ = 37706240. Its totient is φ = 26511840.

The previous prime is 31961701. The next prime is 31961731. The reversal of 31961713 is 31716913.

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 31961713 - 2⁵ = 31961681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (31961213) 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, 73428 + ... + 73861.

It is an arithmetic number, because the mean of its divisors is an integer number (4713280).

Almost surely, 2^31961713 is an apocalyptic number.

It is an amenable number.

31961713 is a deficient number, since it is larger than the sum of its proper divisors (5744527).

31961713 is a wasteful number, since it uses less digits than its factorization.

31961713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147327.

The product of its digits is 3402, while the sum is 31.

The square root of 31961713 is about 5653.4691119701. The cubic root of 31961713 is about 317.3535414782.

The spelling of 31961713 in words is "thirty-one million, nine hundred sixty-one thousand, seven hundred thirteen".