320030312431 has 4 divisors (see below), whose sum is σ = 320037475032. Its totient is φ = 320023149832.

The previous prime is 320030312417. The next prime is 320030312447. The reversal of 320030312431 is 134213030023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134213030023 = 17 ⋅7894884119.

It is a cyclic number.

It is not a de Polignac number, because 320030312431 - 2¹⁵ = 320030279663 is a prime.

It is a super-2 number, since 2×320030312431² (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 (320030312461) 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, 3513856 + ... + 3603781.

It is an arithmetic number, because the mean of its divisors is an integer number (80009368758).

Almost surely, 2^320030312431 is an apocalyptic number.

320030312431 is a deficient number, since it is larger than the sum of its proper divisors (7162601).

320030312431 is an equidigital number, since it uses as much as digits as its factorization.

320030312431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162600.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 320030312431 its reverse (134213030023), we get a palindrome (454243342454).

The spelling of 320030312431 in words is "three hundred twenty billion, thirty million, three hundred twelve thousand, four hundred thirty-one".