320401302031 has 2 divisors, whose sum is σ = 320401302032. Its totient is φ = 320401302030.

The previous prime is 320401302029. The next prime is 320401302047. The reversal of 320401302031 is 130203104023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320401302031 - 2¹ = 320401302029 is a prime.

It is a super-2 number, since 2×320401302031² (a number of 24 digits) contains 22 as substring.

Together with 320401302029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320401302731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160200651015 + 160200651016.

It is an arithmetic number, because the mean of its divisors is an integer number (160200651016).

Almost surely, 2^320401302031 is an apocalyptic number.

320401302031 is a deficient number, since it is larger than the sum of its proper divisors (1).

320401302031 is an equidigital number, since it uses as much as digits as its factorization.

320401302031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 320401302031 its reverse (130203104023), we get a palindrome (450604406054).

The spelling of 320401302031 in words is "three hundred twenty billion, four hundred one million, three hundred two thousand, thirty-one".