230440661 has 16 divisors (see below), whose sum is σ = 271211328. Its totient is φ = 193440000.

The previous prime is 230440643. The next prime is 230440663. The reversal of 230440661 is 166044032.

It is a cyclic number.

It is not a de Polignac number, because 230440661 - 2⁶ = 230440597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230440661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230440663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1715 + ... + 21536.

It is an arithmetic number, because the mean of its divisors is an integer number (16950708).

Almost surely, 2^230440661 is an apocalyptic number.

It is an amenable number.

230440661 is a deficient number, since it is larger than the sum of its proper divisors (40770667).

230440661 is a wasteful number, since it uses less digits than its factorization.

230440661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23332.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 230440661 is about 15180.2720990106. The cubic root of 230440661 is about 613.0836073443.

Adding to 230440661 its reverse (166044032), we get a palindrome (396484693).

The spelling of 230440661 in words is "two hundred thirty million, four hundred forty thousand, six hundred sixty-one".