123122110231 has 4 divisors (see below), whose sum is σ = 123123365464. Its totient is φ = 123120855000.

The previous prime is 123122110217. The next prime is 123122110271. The reversal of 123122110231 is 132011221321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123122110231 - 2²³ = 123113721623 is a prime.

It is a super-2 number, since 2×123122110231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123122110199 and 123122110208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123122110211) 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, 466740 + ... + 681241.

It is an arithmetic number, because the mean of its divisors is an integer number (30780841366).

Almost surely, 2^123122110231 is an apocalyptic number.

123122110231 is a deficient number, since it is larger than the sum of its proper divisors (1255233).

123122110231 is a wasteful number, since it uses less digits than its factorization.

123122110231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255232.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123122110231 its reverse (132011221321), we get a palindrome (255133331552).

The spelling of 123122110231 in words is "one hundred twenty-three billion, one hundred twenty-two million, one hundred ten thousand, two hundred thirty-one".