231427386 has 12 divisors (see below), whose sum is σ = 501426042. Its totient is φ = 77142456.

The previous prime is 231427379. The next prime is 231427423. The reversal of 231427386 is 683724132.

It is a happy number.

231427386 is a `hidden beast` number, since 231 + 42 + 7 + 386 = 666.

It can be written as a sum of positive squares in only one way, i.e., 220077225 + 11350161 = 14835^2 + 3369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231427386.

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, 6428521 + ... + 6428556.

Almost surely, 2^231427386 is an apocalyptic number.

231427386 is an abundant number, since it is smaller than the sum of its proper divisors (269998656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231427386 is a wasteful number, since it uses less digits than its factorization.

231427386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857085 (or 12857082 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 231427386 is about 15212.7376234523. The cubic root of 231427386 is about 613.9574165773.

The spelling of 231427386 in words is "two hundred thirty-one million, four hundred twenty-seven thousand, three hundred eighty-six".