1321314402 has 16 divisors (see below), whose sum is σ = 2679849792. Its totient is φ = 434234640.

The previous prime is 1321314353. The next prime is 1321314413. The reversal of 1321314402 is 2044131231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550413 + ... + 1551264.

It is an arithmetic number, because the mean of its divisors is an integer number (167490612).

Almost surely, 2^1321314402 is an apocalyptic number.

1321314402 is an abundant number, since it is smaller than the sum of its proper divisors (1358535390).

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

1321314402 is a wasteful number, since it uses less digits than its factorization.

1321314402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101753.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1321314402 is about 36349.8886105584. Note that the first 3 decimals coincide. The cubic root of 1321314402 is about 1097.3252927661.

Adding to 1321314402 its reverse (2044131231), we get a palindrome (3365445633).

The spelling of 1321314402 in words is "one billion, three hundred twenty-one million, three hundred fourteen thousand, four hundred two".