31169057 has 2 divisors, whose sum is σ = 31169058. Its totient is φ = 31169056.

The previous prime is 31169027. The next prime is 31169069. The reversal of 31169057 is 75096113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30514576 + 654481 = 5524^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 31169057 - 2¹⁸ = 30906913 is a prime.

It is a super-2 number, since 2×31169057² = 1943020228538498, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1925717 and since 31169057 and 1925717 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (31169027) 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, 15584528 + 15584529.

It is an arithmetic number, because the mean of its divisors is an integer number (15584529).

Almost surely, 2^31169057 is an apocalyptic number.

It is an amenable number.

31169057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31169057 is an equidigital number, since it uses as much as digits as its factorization.

31169057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 31169057 is about 5582.9254875916. The cubic root of 31169057 is about 314.7080758958.

The spelling of 31169057 in words is "thirty-one million, one hundred sixty-nine thousand, fifty-seven".