31534457 has 2 divisors, whose sum is σ = 31534458. Its totient is φ = 31534456.

The previous prime is 31534441. The next prime is 31534483. The reversal of 31534457 is 75443513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27920656 + 3613801 = 5284^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 31534457 - 2⁴ = 31534441 is a prime.

It is not a weakly prime, because it can be changed into another prime (31534427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15767228 + 15767229.

It is an arithmetic number, because the mean of its divisors is an integer number (15767229).

Almost surely, 2^31534457 is an apocalyptic number.

It is an amenable number.

31534457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31534457 is an equidigital number, since it uses as much as digits as its factorization.

31534457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 32.

The square root of 31534457 is about 5615.5549146990. The cubic root of 31534457 is about 315.9330928421.

The spelling of 31534457 in words is "thirty-one million, five hundred thirty-four thousand, four hundred fifty-seven".