31964097 has 32 divisors (see below), whose sum is σ = 49641984. Its totient is φ = 18080000.

The previous prime is 31964087. The next prime is 31964117. The reversal of 31964097 is 79046913.

It is a cyclic number.

It is not a de Polignac number, because 31964097 - 2⁶ = 31964033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31964027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127222 + ... + 127472.

It is an arithmetic number, because the mean of its divisors is an integer number (1551312).

Almost surely, 2^31964097 is an apocalyptic number.

It is an amenable number.

31964097 is a deficient number, since it is larger than the sum of its proper divisors (17677887).

31964097 is a wasteful number, since it uses less digits than its factorization.

31964097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

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

The square root of 31964097 is about 5653.6799520312. The cubic root of 31964097 is about 317.3614316690.

The spelling of 31964097 in words is "thirty-one million, nine hundred sixty-four thousand, ninety-seven".