31241039 has 2 divisors, whose sum is σ = 31241040. Its totient is φ = 31241038.

The previous prime is 31241029. The next prime is 31241051. The reversal of 31241039 is 93014213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31241039 - 2¹⁶ = 31175503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31241029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620519 + 15620520.

It is an arithmetic number, because the mean of its divisors is an integer number (15620520).

Almost surely, 2^31241039 is an apocalyptic number.

31241039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31241039 is an equidigital number, since it uses as much as digits as its factorization.

31241039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 31241039 is about 5589.3683900777. The cubic root of 31241039 is about 314.9501525221.

The spelling of 31241039 in words is "thirty-one million, two hundred forty-one thousand, thirty-nine".