123811255 has 8 divisors (see below), whose sum is σ = 157313232. Its totient is φ = 93222528.

The previous prime is 123811229. The next prime is 123811271. The reversal of 123811255 is 552118321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123811255 - 2⁵ = 123811223 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 7 ways as a sum of consecutive naturals, for example, 728217 + ... + 728386.

It is an arithmetic number, because the mean of its divisors is an integer number (19664154).

Almost surely, 2^123811255 is an apocalyptic number.

123811255 is a deficient number, since it is larger than the sum of its proper divisors (33501977).

123811255 is a wasteful number, since it uses less digits than its factorization.

123811255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456625.

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

The square root of 123811255 is about 11127.0505975303. The cubic root of 123811255 is about 498.4099555439.

Adding to 123811255 its reverse (552118321), we get a palindrome (675929576).

The spelling of 123811255 in words is "one hundred twenty-three million, eight hundred eleven thousand, two hundred fifty-five".