231228275 has 12 divisors (see below), whose sum is σ = 287710752. Its totient is φ = 184345440.

The previous prime is 231228259. The next prime is 231228293. The reversal of 231228275 is 572822132.

231228275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231228275 - 2⁴ = 231228259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8459 + ... + 23108.

It is an arithmetic number, because the mean of its divisors is an integer number (23975896).

Almost surely, 2^231228275 is an apocalyptic number.

231228275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231228275 is a deficient number, since it is larger than the sum of its proper divisors (56482477).

231228275 is a wasteful number, since it uses less digits than its factorization.

231228275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31870 (or 31865 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 231228275 is about 15206.1919953682. The cubic root of 231228275 is about 613.7812911375.

The spelling of 231228275 in words is "two hundred thirty-one million, two hundred twenty-eight thousand, two hundred seventy-five".