320331213391 has 16 divisors (see below), whose sum is σ = 367325740800. Its totient is φ = 273645223488.

The previous prime is 320331213383. The next prime is 320331213407. The reversal of 320331213391 is 193312133023.

It is not a de Polignac number, because 320331213391 - 2³ = 320331213383 is a prime.

It is a super-2 number, since 2×320331213391² (a number of 24 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 (320331213491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19840200 + ... + 19856338.

It is an arithmetic number, because the mean of its divisors is an integer number (22957858800).

Almost surely, 2^320331213391 is an apocalyptic number.

320331213391 is a deficient number, since it is larger than the sum of its proper divisors (46994527409).

320331213391 is a wasteful number, since it uses less digits than its factorization.

320331213391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25518.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 320331213391 in words is "three hundred twenty billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred ninety-one".