31010113 has 2 divisors, whose sum is σ = 31010114. Its totient is φ = 31010112.

The previous prime is 31010093. The next prime is 31010123. The reversal of 31010113 is 31101013.

It is an a-pointer prime, because the next prime (31010123) can be obtained adding 31010113 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29680704 + 1329409 = 5448^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 31010113 - 2⁵ = 31010081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31010113.

It is not a weakly prime, because it can be changed into another prime (31010123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505056 + 15505057.

It is an arithmetic number, because the mean of its divisors is an integer number (15505057).

Almost surely, 2^31010113 is an apocalyptic number.

It is an amenable number.

31010113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31010113 is an equidigital number, since it uses as much as digits as its factorization.

31010113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 31010113 is about 5568.6724629843. The cubic root of 31010113 is about 314.1722215064.

Adding to 31010113 its reverse (31101013), we get a palindrome (62111126).

The spelling of 31010113 in words is "thirty-one million, ten thousand, one hundred thirteen".