31589057 has 2 divisors, whose sum is σ = 31589058. Its totient is φ = 31589056.

The previous prime is 31589027. The next prime is 31589069. The reversal of 31589057 is 75098513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23726641 + 7862416 = 4871^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 31589057 - 2⁶ = 31588993 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31589057.

It is not a weakly prime, because it can be changed into another prime (31589017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15794528 + 15794529.

It is an arithmetic number, because the mean of its divisors is an integer number (15794529).

Almost surely, 2^31589057 is an apocalyptic number.

It is an amenable number.

31589057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31589057 is an equidigital number, since it uses as much as digits as its factorization.

31589057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 31589057 is about 5620.4143085719. The cubic root of 31589057 is about 316.1153273704.

The spelling of 31589057 in words is "thirty-one million, five hundred eighty-nine thousand, fifty-seven".