31196923 has 2 divisors, whose sum is σ = 31196924. Its totient is φ = 31196922.

The previous prime is 31196897. The next prime is 31196929. The reversal of 31196923 is 32969113.

It is a strong prime.

It is an emirp because it is prime and its reverse (32969113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31196923 is a prime.

It is not a weakly prime, because it can be changed into another prime (31196929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15598461 + 15598462.

It is an arithmetic number, because the mean of its divisors is an integer number (15598462).

Almost surely, 2^31196923 is an apocalyptic number.

31196923 is a deficient number, since it is larger than the sum of its proper divisors (1).

31196923 is an equidigital number, since it uses as much as digits as its factorization.

31196923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 31196923 is about 5585.4205750328. The cubic root of 31196923 is about 314.8018338719.

The spelling of 31196923 in words is "thirty-one million, one hundred ninety-six thousand, nine hundred twenty-three".