31342529 has 2 divisors, whose sum is σ = 31342530. Its totient is φ = 31342528.

The previous prime is 31342513. The next prime is 31342541. The reversal of 31342529 is 92524313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24850225 + 6492304 = 4985^2 + 2548^2 .

It is a cyclic number.

It is not a de Polignac number, because 31342529 - 2⁴ = 31342513 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31342579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671264 + 15671265.

It is an arithmetic number, because the mean of its divisors is an integer number (15671265).

Almost surely, 2^31342529 is an apocalyptic number.

It is an amenable number.

31342529 is a deficient number, since it is larger than the sum of its proper divisors (1).

31342529 is an equidigital number, since it uses as much as digits as its factorization.

31342529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 31342529 is about 5598.4398719643. The cubic root of 31342529 is about 315.2908341079.

The spelling of 31342529 in words is "thirty-one million, three hundred forty-two thousand, five hundred twenty-nine".