321431235105 has 16 divisors (see below), whose sum is σ = 523993561920. Its totient is φ = 168195463488.

The previous prime is 321431235077. The next prime is 321431235133. The reversal of 321431235105 is 501532134123.

It is an interprime number because it is at equal distance from previous prime (321431235077) and next prime (321431235133).

It is not a de Polignac number, because 321431235105 - 2²⁰ = 321430186529 is a prime.

It is a super-2 number, since 2×321431235105² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202157215 + ... + 202158804.

It is an arithmetic number, because the mean of its divisors is an integer number (32749597620).

Almost surely, 2^321431235105 is an apocalyptic number.

It is an amenable number.

321431235105 is a deficient number, since it is larger than the sum of its proper divisors (202562326815).

321431235105 is a wasteful number, since it uses less digits than its factorization.

321431235105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404316080.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 321431235105 its reverse (501532134123), we get a palindrome (822963369228).

The spelling of 321431235105 in words is "three hundred twenty-one billion, four hundred thirty-one million, two hundred thirty-five thousand, one hundred five".