31240441013539 has 2 divisors, whose sum is σ = 31240441013540. Its totient is φ = 31240441013538.

The previous prime is 31240441013519. The next prime is 31240441013569. The reversal of 31240441013539 is 93531014404213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31240441013539 - 2⁹ = 31240441013027 is a prime.

It is not a weakly prime, because it can be changed into another prime (31240441013519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620220506769 + 15620220506770.

It is an arithmetic number, because the mean of its divisors is an integer number (15620220506770).

Almost surely, 2^{31240441013539} is an apocalyptic number.

31240441013539 is a deficient number, since it is larger than the sum of its proper divisors (1).

31240441013539 is an equidigital number, since it uses as much as digits as its factorization.

31240441013539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 31240441013539 in words is "thirty-one trillion, two hundred forty billion, four hundred forty-one million, thirteen thousand, five hundred thirty-nine".