1334400321 has 4 divisors (see below), whose sum is σ = 1779200432. Its totient is φ = 889600212.

The previous prime is 1334400293. The next prime is 1334400323. The reversal of 1334400321 is 1230044331.

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 not a de Polignac number, because 1334400321 - 2⁵ = 1334400289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1334400323) 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, 222400051 + ... + 222400056.

It is an arithmetic number, because the mean of its divisors is an integer number (444800108).

Almost surely, 2^1334400321 is an apocalyptic number.

It is an amenable number.

1334400321 is a deficient number, since it is larger than the sum of its proper divisors (444800111).

1334400321 is an equidigital number, since it uses as much as digits as its factorization.

1334400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444800110.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1334400321 is about 36529.4445755749. Note that the first 3 decimals coincide. The cubic root of 1334400321 is about 1100.9359309889.

Adding to 1334400321 its reverse (1230044331), we get a palindrome (2564444652).

The spelling of 1334400321 in words is "one billion, three hundred thirty-four million, four hundred thousand, three hundred twenty-one".