31796661 has 16 divisors (see below), whose sum is σ = 46521216. Its totient is φ = 19196736.

The previous prime is 31796657. The next prime is 31796663. The reversal of 31796661 is 16669713.

It is not a de Polignac number, because 31796661 - 2² = 31796657 is a prime.

It is a super-2 number, since 2×31796661² = 2022055301497842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31796663) 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, 5625 + ... + 9758.

It is an arithmetic number, because the mean of its divisors is an integer number (2907576).

Almost surely, 2^31796661 is an apocalyptic number.

It is an amenable number.

31796661 is a deficient number, since it is larger than the sum of its proper divisors (14724555).

31796661 is a wasteful number, since it uses less digits than its factorization.

31796661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15452.

The product of its digits is 40824, while the sum is 39.

The square root of 31796661 is about 5638.8528088610. The cubic root of 31796661 is about 316.8063215343.

The spelling of 31796661 in words is "thirty-one million, seven hundred ninety-six thousand, six hundred sixty-one".