31983113 has 2 divisors, whose sum is σ = 31983114. Its totient is φ = 31983112.

The previous prime is 31983109. The next prime is 31983121. The reversal of 31983113 is 31138913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 12020089 = 4468^2 + 3467^2 .

It is a cyclic number.

It is not a de Polignac number, because 31983113 - 2² = 31983109 is a prime.

It is not a weakly prime, because it can be changed into another prime (31983163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15991556 + 15991557.

It is an arithmetic number, because the mean of its divisors is an integer number (15991557).

Almost surely, 2^31983113 is an apocalyptic number.

It is an amenable number.

31983113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31983113 is an equidigital number, since it uses as much as digits as its factorization.

31983113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 31983113 is about 5655.3614384936. The cubic root of 31983113 is about 317.4243538137.

The spelling of 31983113 in words is "thirty-one million, nine hundred eighty-three thousand, one hundred thirteen".