1232123313 has 4 divisors (see below), whose sum is σ = 1642831088. Its totient is φ = 821415540.

The previous prime is 1232123309. The next prime is 1232123327. The reversal of 1232123313 is 3133212321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1232123313 - 2² = 1232123309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232123313.

It is not an unprimeable number, because it can be changed into a prime (1232123353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205353883 + ... + 205353888.

It is an arithmetic number, because the mean of its divisors is an integer number (410707772).

Almost surely, 2^1232123313 is an apocalyptic number.

It is an amenable number.

1232123313 is a deficient number, since it is larger than the sum of its proper divisors (410707775).

1232123313 is an equidigital number, since it uses as much as digits as its factorization.

1232123313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410707774.

The product of its digits is 648, while the sum is 21.

The square root of 1232123313 is about 35101.6141081860. The cubic root of 1232123313 is about 1072.0574478314.

Adding to 1232123313 its reverse (3133212321), we get a palindrome (4365335634).

The spelling of 1232123313 in words is "one billion, two hundred thirty-two million, one hundred twenty-three thousand, three hundred thirteen".