31052639 has 2 divisors, whose sum is σ = 31052640. Its totient is φ = 31052638.

The previous prime is 31052627. The next prime is 31052653. The reversal of 31052639 is 93625013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31052639 - 2¹² = 31048543 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31052039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15526319 + 15526320.

It is an arithmetic number, because the mean of its divisors is an integer number (15526320).

Almost surely, 2^31052639 is an apocalyptic number.

31052639 is a deficient number, since it is larger than the sum of its proper divisors (1).

31052639 is an equidigital number, since it uses as much as digits as its factorization.

31052639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 31052639 is about 5572.4894795773. The cubic root of 31052639 is about 314.3157702169.

The spelling of 31052639 in words is "thirty-one million, fifty-two thousand, six hundred thirty-nine".