231554155 has 16 divisors (see below), whose sum is σ = 324043200. Its totient is φ = 158778816.

The previous prime is 231554149. The next prime is 231554203. The reversal of 231554155 is 551455132.

It is not a de Polignac number, because 231554155 - 2⁷ = 231554027 is a prime.

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, 65794 + ... + 69223.

It is an arithmetic number, because the mean of its divisors is an integer number (20252700).

Almost surely, 2^231554155 is an apocalyptic number.

231554155 is a deficient number, since it is larger than the sum of its proper divisors (92489045).

231554155 is an equidigital number, since it uses as much as digits as its factorization.

231554155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135043 (or 135029 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 231554155 is about 15216.9035943585. The cubic root of 231554155 is about 614.0694986178.

The spelling of 231554155 in words is "two hundred thirty-one million, five hundred fifty-four thousand, one hundred fifty-five".