123858265231 has 2 divisors, whose sum is σ = 123858265232. Its totient is φ = 123858265230.

The previous prime is 123858265213. The next prime is 123858265243. The reversal of 123858265231 is 132562858321.

Together with previous prime (123858265213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123858265231 - 2²⁵ = 123824710799 is a prime.

It is a super-2 number, since 2×123858265231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123858265031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61929132615 + 61929132616.

It is an arithmetic number, because the mean of its divisors is an integer number (61929132616).

Almost surely, 2^123858265231 is an apocalyptic number.

123858265231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123858265231 is an equidigital number, since it uses as much as digits as its factorization.

123858265231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 46.

The spelling of 123858265231 in words is "one hundred twenty-three billion, eight hundred fifty-eight million, two hundred sixty-five thousand, two hundred thirty-one".