123245313 has 4 divisors (see below), whose sum is σ = 164327088. Its totient is φ = 82163540.

The previous prime is 123245249. The next prime is 123245357. The reversal of 123245313 is 313542321.

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: 313542321 = 3 ⋅104514107.

It is a cyclic number.

It is not a de Polignac number, because 123245313 - 2⁶ = 123245249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123245363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20540883 + ... + 20540888.

It is an arithmetic number, because the mean of its divisors is an integer number (41081772).

Almost surely, 2^123245313 is an apocalyptic number.

It is an amenable number.

123245313 is a deficient number, since it is larger than the sum of its proper divisors (41081775).

123245313 is an equidigital number, since it uses as much as digits as its factorization.

123245313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41081774.

The product of its digits is 2160, while the sum is 24.

The square root of 123245313 is about 11101.5905617168. The cubic root of 123245313 is about 497.6493838583.

Adding to 123245313 its reverse (313542321), we get a palindrome (436787634).

The spelling of 123245313 in words is "one hundred twenty-three million, two hundred forty-five thousand, three hundred thirteen".