123181255 has 4 divisors (see below), whose sum is σ = 147817512. Its totient is φ = 98545000.

The previous prime is 123181243. The next prime is 123181271. The reversal of 123181255 is 552181321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552181321 = 83 ⋅6652787.

It is not a de Polignac number, because 123181255 - 2¹¹ = 123179207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12318121 + ... + 12318130.

It is an arithmetic number, because the mean of its divisors is an integer number (36954378).

Almost surely, 2^123181255 is an apocalyptic number.

123181255 is a deficient number, since it is larger than the sum of its proper divisors (24636257).

123181255 is an equidigital number, since it uses as much as digits as its factorization.

123181255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24636256.

The product of its digits is 2400, while the sum is 28.

The square root of 123181255 is about 11098.7051046507. The cubic root of 123181255 is about 497.5631494799.

The spelling of 123181255 in words is "one hundred twenty-three million, one hundred eighty-one thousand, two hundred fifty-five".