1312145179 has 4 divisors (see below), whose sum is σ = 1315107576. Its totient is φ = 1309182784.

The previous prime is 1312145137. The next prime is 1312145183. The reversal of 1312145179 is 9715412131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9715412131 = 43 ⋅225939817.

It is a cyclic number.

It is not a de Polignac number, because 1312145179 - 2⁹ = 1312144667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312145479) 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, 1480534 + ... + 1481419.

It is an arithmetic number, because the mean of its divisors is an integer number (328776894).

Almost surely, 2^1312145179 is an apocalyptic number.

1312145179 is a deficient number, since it is larger than the sum of its proper divisors (2962397).

1312145179 is an equidigital number, since it uses as much as digits as its factorization.

1312145179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962396.

The product of its digits is 7560, while the sum is 34.

The square root of 1312145179 is about 36223.5445394290. The cubic root of 1312145179 is about 1094.7811128823.

The spelling of 1312145179 in words is "one billion, three hundred twelve million, one hundred forty-five thousand, one hundred seventy-nine".