321031313405 has 16 divisors (see below), whose sum is σ = 420867413568. Its totient is φ = 233139408000.

The previous prime is 321031313399. The next prime is 321031313413. The reversal of 321031313405 is 504313130123.

It is not a de Polignac number, because 321031313405 - 2²⁸ = 320762877949 is a prime.

It is a super-2 number, since 2×321031313405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4185536 + ... + 4261545.

It is an arithmetic number, because the mean of its divisors is an integer number (26304213348).

Almost surely, 2^321031313405 is an apocalyptic number.

It is an amenable number.

321031313405 is a deficient number, since it is larger than the sum of its proper divisors (99836100163).

321031313405 is a wasteful number, since it uses less digits than its factorization.

321031313405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8447788.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 321031313405 its reverse (504313130123), we get a palindrome (825344443528).

It can be divided in two parts, 321031 and 313405, that added together give a palindrome (634436).

The spelling of 321031313405 in words is "three hundred twenty-one billion, thirty-one million, three hundred thirteen thousand, four hundred five".