1312419613 has 4 divisors (see below), whose sum is σ = 1312509628. Its totient is φ = 1312329600.

The previous prime is 1312419599. The next prime is 1312419617. The reversal of 1312419613 is 3169142131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3169142131 = 3719 ⋅852149.

It can be written as a sum of positive squares in 2 ways, for example, as 135792409 + 1176627204 = 11653^2 + 34302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312419613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312419617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17556 + ... + 54157.

It is an arithmetic number, because the mean of its divisors is an integer number (328127407).

Almost surely, 2^1312419613 is an apocalyptic number.

It is an amenable number.

1312419613 is a deficient number, since it is larger than the sum of its proper divisors (90015).

1312419613 is an equidigital number, since it uses as much as digits as its factorization.

1312419613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90014.

The product of its digits is 3888, while the sum is 31.

The square root of 1312419613 is about 36227.3324024831. The cubic root of 1312419613 is about 1094.8574317280.

The spelling of 1312419613 in words is "one billion, three hundred twelve million, four hundred nineteen thousand, six hundred thirteen".