31953113 has 2 divisors, whose sum is σ = 31953114. Its totient is φ = 31953112.

The previous prime is 31953109. The next prime is 31953133. The reversal of 31953113 is 31135913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31393609 + 559504 = 5603^2 + 748^2 .

It is a cyclic number.

It is not a de Polignac number, because 31953113 - 2² = 31953109 is a prime.

It is not a weakly prime, because it can be changed into another prime (31953133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15976556 + 15976557.

It is an arithmetic number, because the mean of its divisors is an integer number (15976557).

Almost surely, 2^31953113 is an apocalyptic number.

It is an amenable number.

31953113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31953113 is an equidigital number, since it uses as much as digits as its factorization.

31953113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1215, while the sum is 26.

The square root of 31953113 is about 5652.7084658595. The cubic root of 31953113 is about 317.3250752810.

The spelling of 31953113 in words is "thirty-one million, nine hundred fifty-three thousand, one hundred thirteen".