1312130219 has 4 divisors (see below), whose sum is σ = 1312203144. Its totient is φ = 1312057296.

The previous prime is 1312130213. The next prime is 1312130221. The reversal of 1312130219 is 9120312131.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312130219 is a prime.

It is a super-2 number, since 2×1312130219² = 3443371423225975922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312130194 and 1312130203.

It is not an unprimeable number, because it can be changed into a prime (1312130213) 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, 11984 + ... + 52610.

It is an arithmetic number, because the mean of its divisors is an integer number (328050786).

Almost surely, 2^1312130219 is an apocalyptic number.

1312130219 is a deficient number, since it is larger than the sum of its proper divisors (72925).

1312130219 is an equidigital number, since it uses as much as digits as its factorization.

1312130219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72924.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1312130219 is about 36223.3380433112. The cubic root of 1312130219 is about 1094.7769522685.

The spelling of 1312130219 in words is "one billion, three hundred twelve million, one hundred thirty thousand, two hundred nineteen".