1320431179 has 2 divisors, whose sum is σ = 1320431180. Its totient is φ = 1320431178.

The previous prime is 1320431129. The next prime is 1320431249. The reversal of 1320431179 is 9711340231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320431179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320431179.

It is not a weakly prime, because it can be changed into another prime (1320431129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660215589 + 660215590.

It is an arithmetic number, because the mean of its divisors is an integer number (660215590).

Almost surely, 2^1320431179 is an apocalyptic number.

1320431179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320431179 is an equidigital number, since it uses as much as digits as its factorization.

1320431179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1320431179 is about 36337.7376703614. The cubic root of 1320431179 is about 1097.0807385647.

The spelling of 1320431179 in words is "one billion, three hundred twenty million, four hundred thirty-one thousand, one hundred seventy-nine".