431011401023321 has 4 divisors (see below), whose sum is σ = 431012058385872. Its totient is φ = 431010743660772.

The previous prime is 431011401023267. The next prime is 431011401023383. The reversal of 431011401023321 is 123320104110134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431011401023321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431011401026321) 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, 327696791 + ... + 329009436.

It is an arithmetic number, because the mean of its divisors is an integer number (107753014596468).

Almost surely, 2^{431011401023321} is an apocalyptic number.

It is an amenable number.

431011401023321 is a deficient number, since it is larger than the sum of its proper divisors (657362551).

431011401023321 is an equidigital number, since it uses as much as digits as its factorization.

431011401023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657362550.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 431011401023321 its reverse (123320104110134), we get a palindrome (554331505133455).

The spelling of 431011401023321 in words is "four hundred thirty-one trillion, eleven billion, four hundred one million, twenty-three thousand, three hundred twenty-one".