1321311302 has 16 divisors (see below), whose sum is σ = 2018204160. Its totient is φ = 648684288.

The previous prime is 1321311293. The next prime is 1321311307. The reversal of 1321311302 is 2031131231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321311307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177 + ... + 51452.

It is an arithmetic number, because the mean of its divisors is an integer number (126137760).

Almost surely, 2^1321311302 is an apocalyptic number.

1321311302 is a deficient number, since it is larger than the sum of its proper divisors (696892858).

1321311302 is a wasteful number, since it uses less digits than its factorization.

1321311302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53855.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1321311302 is about 36349.8459694123. The cubic root of 1321311302 is about 1097.3244346027.

Adding to 1321311302 its reverse (2031131231), we get a palindrome (3352442533).

The spelling of 1321311302 in words is "one billion, three hundred twenty-one million, three hundred eleven thousand, three hundred two".