1313153521 has 8 divisors (see below), whose sum is σ = 1355993600. Its totient is φ = 1270343520.

The previous prime is 1313153509. The next prime is 1313153533. The reversal of 1313153521 is 1253513131.

It is an interprime number because it is at equal distance from previous prime (1313153509) and next prime (1313153533).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313153521 - 2¹⁷ = 1313022449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313153551) 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, 111220 + ... + 122458.

It is an arithmetic number, because the mean of its divisors is an integer number (169499200).

Almost surely, 2^1313153521 is an apocalyptic number.

It is an amenable number.

1313153521 is a deficient number, since it is larger than the sum of its proper divisors (42840079).

1313153521 is a wasteful number, since it uses less digits than its factorization.

1313153521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15039.

The product of its digits is 1350, while the sum is 25.

The square root of 1313153521 is about 36237.4601896987. The cubic root of 1313153521 is about 1095.0614759450.

Adding to 1313153521 its reverse (1253513131), we get a palindrome (2566666652).

The spelling of 1313153521 in words is "one billion, three hundred thirteen million, one hundred fifty-three thousand, five hundred twenty-one".