231228346 has 4 divisors (see below), whose sum is σ = 346842522. Its totient is φ = 115614172.

The previous prime is 231228343. The next prime is 231228379. The reversal of 231228346 is 643822132.

231228346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 226653025 + 4575321 = 15055^2 + 2139^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (231228341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57807085 + ... + 57807088.

Almost surely, 2^231228346 is an apocalyptic number.

231228346 is a deficient number, since it is larger than the sum of its proper divisors (115614176).

231228346 is a wasteful number, since it uses less digits than its factorization.

231228346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115614175.

The product of its digits is 13824, while the sum is 31.

The square root of 231228346 is about 15206.1943299433. The cubic root of 231228346 is about 613.7813539592.

The spelling of 231228346 in words is "two hundred thirty-one million, two hundred twenty-eight thousand, three hundred forty-six".