230231661 has 12 divisors (see below), whose sum is σ = 337419936. Its totient is φ = 139534120.

The previous prime is 230231627. The next prime is 230231669. The reversal of 230231661 is 166132032.

It is a happy number.

It is not a de Polignac number, because 230231661 - 2¹¹ = 230229613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230231669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316761 + ... + 317486.

It is an arithmetic number, because the mean of its divisors is an integer number (28118328).

Almost surely, 2^230231661 is an apocalyptic number.

It is an amenable number.

230231661 is a deficient number, since it is larger than the sum of its proper divisors (107188275).

230231661 is a wasteful number, since it uses less digits than its factorization.

230231661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634272 (or 634261 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 230231661 is about 15173.3866028649. The cubic root of 230231661 is about 612.8982042555.

Adding to 230231661 its reverse (166132032), we get a palindrome (396363693).

The spelling of 230231661 in words is "two hundred thirty million, two hundred thirty-one thousand, six hundred sixty-one".