231627028 has 18 divisors (see below), whose sum is σ = 407444478. Its totient is φ = 115217280.

The previous prime is 231627017. The next prime is 231627041. The reversal of 231627028 is 820726132.

231627028 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 3 ways, for example, as 132664324 + 98962704 = 11518^2 + 9948^2 .

It is a super-2 number, since 2×231627028² = 107302160200225568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231826 + ... + 232822.

Almost surely, 2^231627028 is an apocalyptic number.

It is an amenable number.

231627028 is a deficient number, since it is larger than the sum of its proper divisors (175817450).

231627028 is an equidigital number, since it uses as much as digits as its factorization.

231627028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 231627028 is about 15219.2978813085. The cubic root of 231627028 is about 614.1339103217.

The spelling of 231627028 in words is "two hundred thirty-one million, six hundred twenty-seven thousand, twenty-eight".