31346993 has 2 divisors, whose sum is σ = 31346994. Its totient is φ = 31346992.

The previous prime is 31346989. The next prime is 31347013. The reversal of 31346993 is 39964313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24880144 + 6466849 = 4988^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 31346993 - 2² = 31346989 is a prime.

It is not a weakly prime, because it can be changed into another prime (31346933) 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, 15673496 + 15673497.

It is an arithmetic number, because the mean of its divisors is an integer number (15673497).

Almost surely, 2^31346993 is an apocalyptic number.

It is an amenable number.

31346993 is a deficient number, since it is larger than the sum of its proper divisors (1).

31346993 is an equidigital number, since it uses as much as digits as its factorization.

31346993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 38.

The square root of 31346993 is about 5598.8385402689. The cubic root of 31346993 is about 315.3058019648.

The spelling of 31346993 in words is "thirty-one million, three hundred forty-six thousand, nine hundred ninety-three".