31996969 has 8 divisors (see below), whose sum is σ = 33776640. Its totient is φ = 30226896.

The previous prime is 31996961. The next prime is 31996973. The reversal of 31996969 is 96969913.

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 31996969 - 2³ = 31996961 is a prime.

It is a super-2 number, since 2×31996969² = 2047612050373922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31996961) 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, 5079 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (4222080).

Almost surely, 2^31996969 is an apocalyptic number.

It is an amenable number.

31996969 is a deficient number, since it is larger than the sum of its proper divisors (1779671).

31996969 is a wasteful number, since it uses less digits than its factorization.

31996969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799.

The product of its digits is 708588, while the sum is 52.

The square root of 31996969 is about 5656.5863380664. The cubic root of 31996969 is about 317.4701863009.

The spelling of 31996969 in words is "thirty-one million, nine hundred ninety-six thousand, nine hundred sixty-nine".