1313223131 has 8 divisors (see below), whose sum is σ = 1433381184. Its totient is φ = 1193194120.

The previous prime is 1313223101. The next prime is 1313223221.

1313223131 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313223131 is a prime.

It is a super-2 number, since 2×1313223131² = 3449109983586886322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313223101) 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, 10325 + ... + 52278.

It is an arithmetic number, because the mean of its divisors is an integer number (179172648).

Almost surely, 2^1313223131 is an apocalyptic number.

1313223131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1313223131 is a deficient number, since it is larger than the sum of its proper divisors (120158053).

1313223131 is a wasteful number, since it uses less digits than its factorization.

1313223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64521.

The product of its digits is 324, while the sum is 20.

The square root of 1313223131 is about 36238.4206471529. The cubic root of 1313223131 is about 1095.0808252648.

It can be divided in two parts, 13132 and 23131, that added together give a palindrome (36263).

The spelling of 1313223131 in words is "one billion, three hundred thirteen million, two hundred twenty-three thousand, one hundred thirty-one".