321204423131311 has 4 divisors (see below), whose sum is σ = 321273395526592. Its totient is φ = 321135450736032.

The previous prime is 321204423131309. The next prime is 321204423131359. The reversal of 321204423131311 is 113131324402123.

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 321204423131311 - 2¹ = 321204423131309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321204423131381) 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, 34486190655 + ... + 34486199968.

It is an arithmetic number, because the mean of its divisors is an integer number (80318348881648).

Almost surely, 2^{321204423131311} is an apocalyptic number.

321204423131311 is a deficient number, since it is larger than the sum of its proper divisors (68972395281).

321204423131311 is an equidigital number, since it uses as much as digits as its factorization.

321204423131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68972395280.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 321204423131311 its reverse (113131324402123), we get a palindrome (434335747533434).

The spelling of 321204423131311 in words is "three hundred twenty-one trillion, two hundred four billion, four hundred twenty-three million, one hundred thirty-one thousand, three hundred eleven".