1312372019 has 8 divisors (see below), whose sum is σ = 1565064960. Its totient is φ = 1075981896.

The previous prime is 1312371989. The next prime is 1312372021. The reversal of 1312372019 is 9102732131.

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-1312372019 is a prime.

It is a super-2 number, since 2×1312372019² = 3444640632508272722, 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 = 1312371982 and 1312372000.

It is not an unprimeable number, because it can be changed into a prime (1312372079) 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, 4075529 + ... + 4075850.

It is an arithmetic number, because the mean of its divisors is an integer number (195633120).

Almost surely, 2^1312372019 is an apocalyptic number.

1312372019 is a deficient number, since it is larger than the sum of its proper divisors (252692941).

1312372019 is an equidigital number, since it uses as much as digits as its factorization.

1312372019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151409.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 1312372019 is about 36226.6755168067. The cubic root of 1312372019 is about 1094.8441968159.

The spelling of 1312372019 in words is "one billion, three hundred twelve million, three hundred seventy-two thousand, nineteen".