320631345361519 has 4 divisors (see below), whose sum is σ = 339492012735744. Its totient is φ = 301770677987296.

The previous prime is 320631345361487. The next prime is 320631345361631. The reversal of 320631345361519 is 915163543136023.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 320631345361519 - 2⁵ = 320631345361487 is a prime.

It is a super-2 number, since 2×320631345361519² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320631345365519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9430333687087 + ... + 9430333687120.

It is an arithmetic number, because the mean of its divisors is an integer number (84873003183936).

Almost surely, 2^{320631345361519} is an apocalyptic number.

320631345361519 is a deficient number, since it is larger than the sum of its proper divisors (18860667374225).

320631345361519 is a wasteful number, since it uses less digits than its factorization.

320631345361519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18860667374224.

The product of its (nonzero) digits is 5248800, while the sum is 52.

The spelling of 320631345361519 in words is "three hundred twenty trillion, six hundred thirty-one billion, three hundred forty-five million, three hundred sixty-one thousand, five hundred nineteen".