1312359908919 has 4 divisors (see below), whose sum is σ = 1749813211896. Its totient is φ = 874906605944.

The previous prime is 1312359908837. The next prime is 1312359908929. The reversal of 1312359908919 is 9198099532131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312359908919 - 2⁸ = 1312359908663 is a prime.

It is a super-2 number, since 2×1312359908919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312359908929) 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, 218726651484 + ... + 218726651489.

It is an arithmetic number, because the mean of its divisors is an integer number (437453302974).

Almost surely, 2^{1312359908919} is an apocalyptic number.

1312359908919 is a deficient number, since it is larger than the sum of its proper divisors (437453302977).

1312359908919 is an equidigital number, since it uses as much as digits as its factorization.

1312359908919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437453302976.

The product of its (nonzero) digits is 4723920, while the sum is 60.

The spelling of 1312359908919 in words is "one trillion, three hundred twelve billion, three hundred fifty-nine million, nine hundred eight thousand, nine hundred nineteen".