231620668 has 6 divisors (see below), whose sum is σ = 405336176. Its totient is φ = 115810332.

The previous prime is 231620663. The next prime is 231620689. The reversal of 231620668 is 866026132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231620663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28952580 + ... + 28952587.

Almost surely, 2^231620668 is an apocalyptic number.

It is an amenable number.

231620668 is a deficient number, since it is larger than the sum of its proper divisors (173715508).

231620668 is a wasteful number, since it uses less digits than its factorization.

231620668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57905171 (or 57905169 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 231620668 is about 15219.0889346242. The cubic root of 231620668 is about 614.1282893205.

The spelling of 231620668 in words is "two hundred thirty-one million, six hundred twenty thousand, six hundred sixty-eight".