31135057 has 2 divisors, whose sum is σ = 31135058. Its totient is φ = 31135056.

The previous prime is 31135051. The next prime is 31135061. The reversal of 31135057 is 75053113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26255376 + 4879681 = 5124^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 31135057 - 2¹¹ = 31133009 is a prime.

It is not a weakly prime, because it can be changed into another prime (31135051) 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, 15567528 + 15567529.

It is an arithmetic number, because the mean of its divisors is an integer number (15567529).

Almost surely, 2^31135057 is an apocalyptic number.

It is an amenable number.

31135057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31135057 is an equidigital number, since it uses as much as digits as its factorization.

31135057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 31135057 is about 5579.8796582005. The cubic root of 31135057 is about 314.5936037386.

The spelling of 31135057 in words is "thirty-one million, one hundred thirty-five thousand, fifty-seven".