123122031 has 4 divisors (see below), whose sum is σ = 164162712. Its totient is φ = 82081352.

The previous prime is 123122017. The next prime is 123122063. The reversal of 123122031 is 130221321.

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 123122031 - 2⁹ = 123121519 is a prime.

It is a super-3 number, since 3×123122031³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 123122031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123122231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20520336 + ... + 20520341.

It is an arithmetic number, because the mean of its divisors is an integer number (41040678).

Almost surely, 2^123122031 is an apocalyptic number.

123122031 is a deficient number, since it is larger than the sum of its proper divisors (41040681).

123122031 is an equidigital number, since it uses as much as digits as its factorization.

123122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41040680.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123122031 is about 11096.0367248852. The cubic root of 123122031 is about 497.4833959931.

Adding to 123122031 its reverse (130221321), we get a palindrome (253343352).

The spelling of 123122031 in words is "one hundred twenty-three million, one hundred twenty-two thousand, thirty-one".