1321333404 has 48 divisors (see below), whose sum is σ = 3172490496. Its totient is φ = 427772800.

The previous prime is 1321333393. The next prime is 1321333411. The reversal of 1321333404 is 4043331231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105769 + ... + 117599.

It is an arithmetic number, because the mean of its divisors is an integer number (66093552).

Almost surely, 2^1321333404 is an apocalyptic number.

It is an amenable number.

1321333404 is an abundant number, since it is smaller than the sum of its proper divisors (1851157092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321333404 is a wasteful number, since it uses less digits than its factorization.

1321333404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106 (or 12104 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1321333404 is about 36350.1499859354. The cubic root of 1321333404 is about 1097.3305530017.

Adding to 1321333404 its reverse (4043331231), we get a palindrome (5364664635).

The spelling of 1321333404 in words is "one billion, three hundred twenty-one million, three hundred thirty-three thousand, four hundred four".