313111123 has 4 divisors (see below), whose sum is σ = 337196608. Its totient is φ = 289025640.

The previous prime is 313111093. The next prime is 313111153. The reversal of 313111123 is 321111313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321111313 = 83 ⋅3868811.

It is an interprime number because it is at equal distance from previous prime (313111093) and next prime (313111153).

It is a cyclic number.

It is not a de Polignac number, because 313111123 - 2¹³ = 313102931 is a prime.

It is a super-2 number, since 2×313111123² = 196077150692642258, 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 = 313111097 and 313111106.

It is not an unprimeable number, because it can be changed into a prime (313111153) 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, 12042723 + ... + 12042748.

It is an arithmetic number, because the mean of its divisors is an integer number (84299152).

Almost surely, 2^313111123 is an apocalyptic number.

313111123 is a deficient number, since it is larger than the sum of its proper divisors (24085485).

313111123 is a wasteful number, since it uses less digits than its factorization.

313111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24085484.

The product of its digits is 54, while the sum is 16.

The square root of 313111123 is about 17694.9462559229. The cubic root of 313111123 is about 679.0464742472.

Adding to 313111123 its reverse (321111313), we get a palindrome (634222436).

The spelling of 313111123 in words is "three hundred thirteen million, one hundred eleven thousand, one hundred twenty-three".