123031255 has 16 divisors (see below), whose sum is σ = 154459584. Its totient is φ = 93899520.

The previous prime is 123031241. The next prime is 123031273. The reversal of 123031255 is 552130321.

It is a de Polignac number, because none of the positive numbers 2^k-123031255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 51385 + ... + 53725.

It is an arithmetic number, because the mean of its divisors is an integer number (9653724).

Almost surely, 2^123031255 is an apocalyptic number.

123031255 is a deficient number, since it is larger than the sum of its proper divisors (31428329).

123031255 is a wasteful number, since it uses less digits than its factorization.

123031255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826.

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

The square root of 123031255 is about 11091.9455011283. The cubic root of 123031255 is about 497.3611036207.

Adding to 123031255 its reverse (552130321), we get a palindrome (675161576).

The spelling of 123031255 in words is "one hundred twenty-three million, thirty-one thousand, two hundred fifty-five".