313212451551539 has 4 divisors (see below), whose sum is σ = 314099738950056. Its totient is φ = 312325164153024.

The previous prime is 313212451551521. The next prime is 313212451551581. The reversal of 313212451551539 is 935155154212313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313212451551539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313212451551509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443643698729 + ... + 443643699434.

It is an arithmetic number, because the mean of its divisors is an integer number (78524934737514).

Almost surely, 2^{313212451551539} is an apocalyptic number.

313212451551539 is a deficient number, since it is larger than the sum of its proper divisors (887287398517).

313212451551539 is an equidigital number, since it uses as much as digits as its factorization.

313212451551539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887287398516.

The product of its digits is 2430000, while the sum is 50.

The spelling of 313212451551539 in words is "three hundred thirteen trillion, two hundred twelve billion, four hundred fifty-one million, five hundred fifty-one thousand, five hundred thirty-nine".