1321513104 has 20 divisors (see below), whose sum is σ = 3413908976. Its totient is φ = 440504352.

The previous prime is 1321513103. The next prime is 1321513133. The reversal of 1321513104 is 4013151231.

It is not an unprimeable number, because it can be changed into a prime (1321513103) 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, 13765714 + ... + 13765809.

Almost surely, 2^1321513104 is an apocalyptic number.

It is an amenable number.

1321513104 is an abundant number, since it is smaller than the sum of its proper divisors (2092395872).

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

1321513104 is a wasteful number, since it uses less digits than its factorization.

1321513104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27531534 (or 27531528 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1321513104 is about 36352.6216936275. The cubic root of 1321513104 is about 1097.3802960268.

Adding to 1321513104 its reverse (4013151231), we get a palindrome (5334664335).

The spelling of 1321513104 in words is "one billion, three hundred twenty-one million, five hundred thirteen thousand, one hundred four".