1313232331 has 8 divisors (see below), whose sum is σ = 1320411600. Its totient is φ = 1306066080.

The previous prime is 1313232313. The next prime is 1313232343. The reversal of 1313232331 is 1332323131.

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 1313232331 - 2⁷ = 1313232203 is a prime.

It is a super-2 number, since 2×1313232331² = 3449158310367387122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313232631) 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, 251376 + ... + 256546.

It is an arithmetic number, because the mean of its divisors is an integer number (165051450).

Almost surely, 2^1313232331 is an apocalyptic number.

1313232331 is a deficient number, since it is larger than the sum of its proper divisors (7179269).

1313232331 is a wasteful number, since it uses less digits than its factorization.

1313232331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6509.

The product of its digits is 972, while the sum is 22.

The square root of 1313232331 is about 36238.5475840299. The cubic root of 1313232331 is about 1095.0833825150.

Adding to 1313232331 its reverse (1332323131), we get a palindrome (2645555462).

The spelling of 1313232331 in words is "one billion, three hundred thirteen million, two hundred thirty-two thousand, three hundred thirty-one".