321140511401 has 4 divisors (see below), whose sum is σ = 338042643600. Its totient is φ = 304238379204.

The previous prime is 321140511353. The next prime is 321140511403. The reversal of 321140511401 is 104115041123.

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 an emirpimes, since its reverse is a distinct semiprime: 104115041123 = 499 ⋅208647377.

It is a cyclic number.

It is not a de Polignac number, because 321140511401 - 2²⁶ = 321073402537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321140511403) 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, 8451066071 + ... + 8451066108.

It is an arithmetic number, because the mean of its divisors is an integer number (84510660900).

Almost surely, 2^321140511401 is an apocalyptic number.

It is an amenable number.

321140511401 is a deficient number, since it is larger than the sum of its proper divisors (16902132199).

321140511401 is a wasteful number, since it uses less digits than its factorization.

321140511401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16902132198.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 321140511401 its reverse (104115041123), we get a palindrome (425255552524).

The spelling of 321140511401 in words is "three hundred twenty-one billion, one hundred forty million, five hundred eleven thousand, four hundred one".