1323610313 has 4 divisors (see below), whose sum is σ = 1324487808. Its totient is φ = 1322732820.

The previous prime is 1323610303. The next prime is 1323610349. The reversal of 1323610313 is 3130163231.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3130163231 = 13 ⋅240781787.

It is a cyclic number.

It is not a de Polignac number, because 1323610313 - 2¹⁶ = 1323544777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323610303) 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, 436481 + ... + 439502.

It is an arithmetic number, because the mean of its divisors is an integer number (331121952).

Almost surely, 2^1323610313 is an apocalyptic number.

It is an amenable number.

1323610313 is a deficient number, since it is larger than the sum of its proper divisors (877495).

1323610313 is an equidigital number, since it uses as much as digits as its factorization.

1323610313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877494.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 1323610313 is about 36381.4556195873. The cubic root of 1323610313 is about 1097.9604944518.

Adding to 1323610313 its reverse (3130163231), we get a palindrome (4453773544).

The spelling of 1323610313 in words is "one billion, three hundred twenty-three million, six hundred ten thousand, three hundred thirteen".