1312520179 has 2 divisors, whose sum is σ = 1312520180. Its totient is φ = 1312520178.

The previous prime is 1312520159. The next prime is 1312520197. The reversal of 1312520179 is 9710252131.

Together with next prime (1312520197) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312520179 - 2¹⁵ = 1312487411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312520179.

It is not a weakly prime, because it can be changed into another prime (1312520159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656260089 + 656260090.

It is an arithmetic number, because the mean of its divisors is an integer number (656260090).

Almost surely, 2^1312520179 is an apocalyptic number.

1312520179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312520179 is an equidigital number, since it uses as much as digits as its factorization.

1312520179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1312520179 is about 36228.7203610616. The cubic root of 1312520179 is about 1094.8853960109.

The spelling of 1312520179 in words is "one billion, three hundred twelve million, five hundred twenty thousand, one hundred seventy-nine".