313544601959921 has 4 divisors (see below), whose sum is σ = 316474925342832. Its totient is φ = 310614278577012.

The previous prime is 313544601959899. The next prime is 313544601959951. The reversal of 313544601959921 is 129959106445313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313544601959921 - 2³⁸ = 313269724052977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313544601959951) 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, 1465161691295 + ... + 1465161691508.

It is an arithmetic number, because the mean of its divisors is an integer number (79118731335708).

Almost surely, 2^{313544601959921} is an apocalyptic number.

It is an amenable number.

313544601959921 is a deficient number, since it is larger than the sum of its proper divisors (2930323382911).

313544601959921 is a wasteful number, since it uses less digits than its factorization.

313544601959921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930323382910.

The product of its (nonzero) digits is 31492800, while the sum is 62.

The spelling of 313544601959921 in words is "three hundred thirteen trillion, five hundred forty-four billion, six hundred one million, nine hundred fifty-nine thousand, nine hundred twenty-one".