31544057 has 2 divisors, whose sum is σ = 31544058. Its totient is φ = 31544056.

The previous prime is 31544053. The next prime is 31544077. The reversal of 31544057 is 75044513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22429696 + 9114361 = 4736^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 31544057 - 2² = 31544053 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31544053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15772028 + 15772029.

It is an arithmetic number, because the mean of its divisors is an integer number (15772029).

Almost surely, 2^31544057 is an apocalyptic number.

It is an amenable number.

31544057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31544057 is an equidigital number, since it uses as much as digits as its factorization.

31544057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 31544057 is about 5616.4096182526. The cubic root of 31544057 is about 315.9651493104.

The spelling of 31544057 in words is "thirty-one million, five hundred forty-four thousand, fifty-seven".