32319257 has 2 divisors, whose sum is σ = 32319258. Its totient is φ = 32319256.

The previous prime is 32319251. The next prime is 32319269. The reversal of 32319257 is 75291323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31685641 + 633616 = 5629^2 + 796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32319257 is a prime.

It is not a weakly prime, because it can be changed into another prime (32319251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16159628 + 16159629.

It is an arithmetic number, because the mean of its divisors is an integer number (16159629).

Almost surely, 2^32319257 is an apocalyptic number.

It is an amenable number.

32319257 is a deficient number, since it is larger than the sum of its proper divisors (1).

32319257 is an equidigital number, since it uses as much as digits as its factorization.

32319257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 32319257 is about 5685.0028144232. The cubic root of 32319257 is about 318.5325287341.

Subtracting from 32319257 its sum of digits (32), we obtain a square (32319225 = 5685²).

The spelling of 32319257 in words is "thirty-two million, three hundred nineteen thousand, two hundred fifty-seven".