1311320413 has 8 divisors (see below), whose sum is σ = 1473591168. Its totient is φ = 1157821104.

The previous prime is 1311320407. The next prime is 1311320431. The reversal of 1311320413 is 3140231131.

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

It is not a de Polignac number, because 1311320413 - 2²⁵ = 1277765981 is a prime.

It is a super-2 number, since 2×1311320413² = 3439122451100981138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311320443) 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, 2192545 + ... + 2193142.

It is an arithmetic number, because the mean of its divisors is an integer number (184198896).

Almost surely, 2^1311320413 is an apocalyptic number.

1311320413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1311320413 is a deficient number, since it is larger than the sum of its proper divisors (162270755).

1311320413 is a wasteful number, since it uses less digits than its factorization.

1311320413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385723.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1311320413 is about 36212.1583587612. The cubic root of 1311320413 is about 1094.5516851471.

Adding to 1311320413 its reverse (3140231131), we get a palindrome (4451551544).

The spelling of 1311320413 in words is "one billion, three hundred eleven million, three hundred twenty thousand, four hundred thirteen".