1310123239 has 2 divisors, whose sum is σ = 1310123240. Its totient is φ = 1310123238.

The previous prime is 1310123219. The next prime is 1310123249. The reversal of 1310123239 is 9323210131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310123239 - 2⁹ = 1310122727 is a prime.

It is a super-2 number, since 2×1310123239² = 3432845802735702242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310123219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655061619 + 655061620.

It is an arithmetic number, because the mean of its divisors is an integer number (655061620).

Almost surely, 2^1310123239 is an apocalyptic number.

1310123239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310123239 is an equidigital number, since it uses as much as digits as its factorization.

1310123239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1310123239 is about 36195.6245836427. The cubic root of 1310123239 is about 1094.2184922887.

The spelling of 1310123239 in words is "one billion, three hundred ten million, one hundred twenty-three thousand, two hundred thirty-nine".