31110112123 has 4 divisors (see below), whose sum is σ = 32182874640. Its totient is φ = 30037349608.

The previous prime is 31110112051. The next prime is 31110112129. The reversal of 31110112123 is 32121101113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32121101113 = 58657 ⋅547609.

It is a cyclic number.

It is not a de Polignac number, because 31110112123 - 2⁹ = 31110111611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31110112097 and 31110112106.

It is not an unprimeable number, because it can be changed into a prime (31110112129) 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, 536381215 + ... + 536381272.

It is an arithmetic number, because the mean of its divisors is an integer number (8045718660).

Almost surely, 2^31110112123 is an apocalyptic number.

31110112123 is a deficient number, since it is larger than the sum of its proper divisors (1072762517).

31110112123 is a wasteful number, since it uses less digits than its factorization.

31110112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072762516.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31110112123 its reverse (32121101113), we get a palindrome (63231213236).

The spelling of 31110112123 in words is "thirty-one billion, one hundred ten million, one hundred twelve thousand, one hundred twenty-three".