123311313 has 12 divisors (see below), whose sum is σ = 182461188. Its totient is φ = 80202240.

The previous prime is 123311299. The next prime is 123311323. The reversal of 123311313 is 313113321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64834704 + 58476609 = 8052^2 + 7647^2 .

It is not a de Polignac number, because 123311313 - 2⁶ = 123311249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123311323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166720 + ... + 167457.

It is an arithmetic number, because the mean of its divisors is an integer number (15205099).

Almost surely, 2^123311313 is an apocalyptic number.

It is an amenable number.

123311313 is a deficient number, since it is larger than the sum of its proper divisors (59149875).

123311313 is a wasteful number, since it uses less digits than its factorization.

123311313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334224 (or 334221 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 123311313 is about 11104.5627108860. The cubic root of 123311313 is about 497.7382012942.

Adding to 123311313 its reverse (313113321), we get a palindrome (436424634).

The spelling of 123311313 in words is "one hundred twenty-three million, three hundred eleven thousand, three hundred thirteen".