321430040134321 has 4 divisors (see below), whose sum is σ = 321430076928000. Its totient is φ = 321430003340644.

The previous prime is 321430040134309. The next prime is 321430040134471. The reversal of 321430040134321 is 123431040034123.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 321430040134321 - 2¹⁵ = 321430040101553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321430040114321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3011280 + ... + 25532878.

It is an arithmetic number, because the mean of its divisors is an integer number (80357519232000).

Almost surely, 2^{321430040134321} is an apocalyptic number.

It is an amenable number.

321430040134321 is a deficient number, since it is larger than the sum of its proper divisors (36793679).

321430040134321 is a wasteful number, since it uses less digits than its factorization.

321430040134321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36793678.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 321430040134321 its reverse (123431040034123), we get a palindrome (444861080168444).

The spelling of 321430040134321 in words is "three hundred twenty-one trillion, four hundred thirty billion, forty million, one hundred thirty-four thousand, three hundred twenty-one".