1310123219 has 2 divisors, whose sum is σ = 1310123220. Its totient is φ = 1310123218.

The previous prime is 1310123197. The next prime is 1310123239. The reversal of 1310123219 is 9123210131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310123219 - 2⁸ = 1310122963 is a prime.

It is a super-3 number, since 3×1310123219³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1310123194 and 1310123203.

It is not a weakly prime, because it can be changed into another prime (1310123239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655061609 + 655061610.

It is an arithmetic number, because the mean of its divisors is an integer number (655061610).

Almost surely, 2^1310123219 is an apocalyptic number.

1310123219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310123219 is an equidigital number, since it uses as much as digits as its factorization.

1310123219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1310123219 is about 36195.6243073662. The cubic root of 1310123219 is about 1094.2184867207.

The spelling of 1310123219 in words is "one billion, three hundred ten million, one hundred twenty-three thousand, two hundred nineteen".