231812055 has 48 divisors (see below), whose sum is σ = 423783360. Its totient is φ = 116987904.

The previous prime is 231812041. The next prime is 231812059. The reversal of 231812055 is 550218132.

It is a happy number.

It is not a de Polignac number, because 231812055 - 2⁵ = 231812023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231812059) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 99241 + ... + 101549.

It is an arithmetic number, because the mean of its divisors is an integer number (8828820).

Almost surely, 2^231812055 is an apocalyptic number.

231812055 is a deficient number, since it is larger than the sum of its proper divisors (191971305).

231812055 is a wasteful number, since it uses less digits than its factorization.

231812055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 231812055 is about 15225.3753648309. The cubic root of 231812055 is about 614.2973931309.

The spelling of 231812055 in words is "two hundred thirty-one million, eight hundred twelve thousand, fifty-five".