1313322331 has 4 divisors (see below), whose sum is σ = 1313869464. Its totient is φ = 1312775200.

The previous prime is 1313322319. The next prime is 1313322337. The reversal of 1313322331 is 1332233131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1332233131 = 41 ⋅32493491.

It is a cyclic number.

It is not a de Polignac number, because 1313322331 - 2²⁹ = 776451419 is a prime.

It is a super-2 number, since 2×1313322331² = 3449631090206547122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313322337) 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, 269950 + ... + 274771.

It is an arithmetic number, because the mean of its divisors is an integer number (328467366).

Almost surely, 2^1313322331 is an apocalyptic number.

1313322331 is a deficient number, since it is larger than the sum of its proper divisors (547133).

1313322331 is an equidigital number, since it uses as much as digits as its factorization.

1313322331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547132.

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

The square root of 1313322331 is about 36239.7893343767. The cubic root of 1313322331 is about 1095.1083984624.

Adding to 1313322331 its reverse (1332233131), we get a palindrome (2645555462).

The spelling of 1313322331 in words is "one billion, three hundred thirteen million, three hundred twenty-two thousand, three hundred thirty-one".