31342057 has 2 divisors, whose sum is σ = 31342058. Its totient is φ = 31342056.

The previous prime is 31342049. The next prime is 31342093. The reversal of 31342057 is 75024313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23921881 + 7420176 = 4891^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 31342057 - 2³ = 31342049 is a prime.

It is not a weakly prime, because it can be changed into another prime (31342037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671028 + 15671029.

It is an arithmetic number, because the mean of its divisors is an integer number (15671029).

Almost surely, 2^31342057 is an apocalyptic number.

It is an amenable number.

31342057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31342057 is an equidigital number, since it uses as much as digits as its factorization.

31342057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 31342057 is about 5598.3977172045. The cubic root of 31342057 is about 315.2892514020.

The spelling of 31342057 in words is "thirty-one million, three hundred forty-two thousand, fifty-seven".