321431134400323 has 4 divisors (see below), whose sum is σ = 321435605811040. Its totient is φ = 321426662989608.

The previous prime is 321431134400309. The next prime is 321431134400359. The reversal of 321431134400323 is 323004431134123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321431134400323 - 2⁵ = 321431134400291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321431134400303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2235597528 + ... + 2235741301.

It is an arithmetic number, because the mean of its divisors is an integer number (80358901452760).

Almost surely, 2^{321431134400323} is an apocalyptic number.

321431134400323 is a deficient number, since it is larger than the sum of its proper divisors (4471410717).

321431134400323 is an equidigital number, since it uses as much as digits as its factorization.

321431134400323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471410716.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 321431134400323 its reverse (323004431134123), we get a palindrome (644435565534446).

The spelling of 321431134400323 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, one hundred thirty-four million, four hundred thousand, three hundred twenty-three".