1151332313 has 4 divisors (see below), whose sum is σ = 1170846480. Its totient is φ = 1131818148.

The previous prime is 1151332297. The next prime is 1151332319. The reversal of 1151332313 is 3132331511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3132331511 = 5623 ⋅557057.

It is a cyclic number.

It is not a de Polignac number, because 1151332313 - 2⁴ = 1151332297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151332319) 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, 9756995 + ... + 9757112.

It is an arithmetic number, because the mean of its divisors is an integer number (292711620).

Almost surely, 2^1151332313 is an apocalyptic number.

It is an amenable number.

1151332313 is a deficient number, since it is larger than the sum of its proper divisors (19514167).

1151332313 is an equidigital number, since it uses as much as digits as its factorization.

1151332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19514166.

The product of its digits is 810, while the sum is 23.

The square root of 1151332313 is about 33931.2881128907. The cubic root of 1151332313 is about 1048.0939913491.

Adding to 1151332313 its reverse (3132331511), we get a palindrome (4283663824).

The spelling of 1151332313 in words is "one billion, one hundred fifty-one million, three hundred thirty-two thousand, three hundred thirteen".