31336973 has 2 divisors, whose sum is σ = 31336974. Its totient is φ = 31336972.

The previous prime is 31336961. The next prime is 31336999. The reversal of 31336973 is 37963313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 8421604 = 4787^2 + 2902^2 .

It is a cyclic number.

It is not a de Polignac number, because 31336973 - 2⁴ = 31336957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31336273) 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, 15668486 + 15668487.

It is an arithmetic number, because the mean of its divisors is an integer number (15668487).

Almost surely, 2^31336973 is an apocalyptic number.

It is an amenable number.

31336973 is a deficient number, since it is larger than the sum of its proper divisors (1).

31336973 is an equidigital number, since it uses as much as digits as its factorization.

31336973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 35.

The square root of 31336973 is about 5597.9436403022. The cubic root of 31336973 is about 315.2722027737.

The spelling of 31336973 in words is "thirty-one million, three hundred thirty-six thousand, nine hundred seventy-three".