31696073 has 2 divisors, whose sum is σ = 31696074. Its totient is φ = 31696072.

The previous prime is 31696069. The next prime is 31696097. The reversal of 31696073 is 37069613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31326409 + 369664 = 5597^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 31696073 - 2² = 31696069 is a prime.

It is not a weakly prime, because it can be changed into another prime (31690073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15848036 + 15848037.

It is an arithmetic number, because the mean of its divisors is an integer number (15848037).

Almost surely, 2^31696073 is an apocalyptic number.

It is an amenable number.

31696073 is a deficient number, since it is larger than the sum of its proper divisors (1).

31696073 is an equidigital number, since it uses as much as digits as its factorization.

31696073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 31696073 is about 5629.9265536950. The cubic root of 31696073 is about 316.4718988217.

The spelling of 31696073 in words is "thirty-one million, six hundred ninety-six thousand, seventy-three".