313216123 has 12 divisors (see below), whose sum is σ = 345684024. Its totient is φ = 283580000.

The previous prime is 313216117. The next prime is 313216133. The reversal of 313216123 is 321612313.

It is not a de Polignac number, because 313216123 - 2⁵ = 313216091 is a prime.

It is a super-2 number, since 2×313216123² = 196208679414302258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313216094 and 313216103.

It is not an unprimeable number, because it can be changed into a prime (313216133) 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, 25215 + ... + 35527.

It is an arithmetic number, because the mean of its divisors is an integer number (28807002).

Almost surely, 2^313216123 is an apocalyptic number.

313216123 is a deficient number, since it is larger than the sum of its proper divisors (32467901).

313216123 is a wasteful number, since it uses less digits than its factorization.

313216123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586 (or 10575 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 313216123 is about 17697.9129560522. The cubic root of 313216123 is about 679.1223705303.

Adding to 313216123 its reverse (321612313), we get a palindrome (634828436).

The spelling of 313216123 in words is "three hundred thirteen million, two hundred sixteen thousand, one hundred twenty-three".