311494257539 has 2 divisors, whose sum is σ = 311494257540. Its totient is φ = 311494257538.

The previous prime is 311494257521. The next prime is 311494257601. The reversal of 311494257539 is 935752494113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311494257539 is a prime.

It is not a weakly prime, because it can be changed into another prime (311493257539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155747128769 + 155747128770.

It is an arithmetic number, because the mean of its divisors is an integer number (155747128770).

Almost surely, 2^311494257539 is an apocalyptic number.

311494257539 is a deficient number, since it is larger than the sum of its proper divisors (1).

311494257539 is an equidigital number, since it uses as much as digits as its factorization.

311494257539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The spelling of 311494257539 in words is "three hundred eleven billion, four hundred ninety-four million, two hundred fifty-seven thousand, five hundred thirty-nine".