123515023 has 2 divisors, whose sum is σ = 123515024. Its totient is φ = 123515022.

The previous prime is 123515011. The next prime is 123515059. The reversal of 123515023 is 320515321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123515023 - 2²¹ = 121417871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123514985 and 123515003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123515323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61757511 + 61757512.

It is an arithmetic number, because the mean of its divisors is an integer number (61757512).

Almost surely, 2^123515023 is an apocalyptic number.

123515023 is a deficient number, since it is larger than the sum of its proper divisors (1).

123515023 is an equidigital number, since it uses as much as digits as its factorization.

123515023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 123515023 is about 11113.7312816173. The cubic root of 123515023 is about 498.0121379492.

The spelling of 123515023 in words is "one hundred twenty-three million, five hundred fifteen thousand, twenty-three".