1321306368 has 72 divisors (see below), whose sum is σ = 3723497568. Its totient is φ = 414523392.

The previous prime is 1321306333. The next prime is 1321306373. The reversal of 1321306368 is 8636031231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37546 + ... + 63657.

It is an arithmetic number, because the mean of its divisors is an integer number (51715244).

Almost surely, 2^1321306368 is an apocalyptic number.

It is an amenable number.

1321306368 is an abundant number, since it is smaller than the sum of its proper divisors (2402191200).

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

1321306368 is a wasteful number, since it uses less digits than its factorization.

1321306368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101239 (or 101225 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1321306368 is about 36349.7781011109. The cubic root of 1321306368 is about 1097.3230687360.

Adding to 1321306368 its reverse (8636031231), we get a palindrome (9957337599).

The spelling of 1321306368 in words is "one billion, three hundred twenty-one million, three hundred six thousand, three hundred sixty-eight".