3111172123 has 2 divisors, whose sum is σ = 3111172124. Its totient is φ = 3111172122.

The previous prime is 3111172093. The next prime is 3111172151. The reversal of 3111172123 is 3212711113.

3111172123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (3212711113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3111172123 - 2⁹ = 3111171611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3111172094 and 3111172103.

It is not a weakly prime, because it can be changed into another prime (3111172153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555586061 + 1555586062.

It is an arithmetic number, because the mean of its divisors is an integer number (1555586062).

Almost surely, 2^3111172123 is an apocalyptic number.

3111172123 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111172123 is an equidigital number, since it uses as much as digits as its factorization.

3111172123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 3111172123 is about 55777.8820232536. The cubic root of 3111172123 is about 1459.8492561884.

Adding to 3111172123 its reverse (3212711113), we get a palindrome (6323883236).

The spelling of 3111172123 in words is "three billion, one hundred eleven million, one hundred seventy-two thousand, one hundred twenty-three".