231238055 has 4 divisors (see below), whose sum is σ = 277485672. Its totient is φ = 184990440.

The previous prime is 231238043. The next prime is 231238057. The reversal of 231238055 is 550832132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231238055 - 2¹⁴ = 231221671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231238057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23123801 + ... + 23123810.

It is an arithmetic number, because the mean of its divisors is an integer number (69371418).

Almost surely, 2^231238055 is an apocalyptic number.

231238055 is a deficient number, since it is larger than the sum of its proper divisors (46247617).

231238055 is an equidigital number, since it uses as much as digits as its factorization.

231238055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46247616.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 231238055 is about 15206.5135714930. The cubic root of 231238055 is about 613.7899444858.

The spelling of 231238055 in words is "two hundred thirty-one million, two hundred thirty-eight thousand, fifty-five".