231041428 has 6 divisors (see below), whose sum is σ = 404322506. Its totient is φ = 115520712.

The previous prime is 231041401. The next prime is 231041453. The reversal of 231041428 is 824140132.

231041428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 229159044 + 1882384 = 15138^2 + 1372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28880175 + ... + 28880182.

Almost surely, 2^231041428 is an apocalyptic number.

It is an amenable number.

231041428 is a deficient number, since it is larger than the sum of its proper divisors (173281078).

231041428 is a wasteful number, since it uses less digits than its factorization.

231041428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57760361 (or 57760359 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 231041428 is about 15200.0469736116. The cubic root of 231041428 is about 613.6159219481.

The spelling of 231041428 in words is "two hundred thirty-one million, forty-one thousand, four hundred twenty-eight".