230973561 has 24 divisors (see below), whose sum is σ = 410621120. Its totient is φ = 121831776.

The previous prime is 230973553. The next prime is 230973581. The reversal of 230973561 is 165379032.

230973561 is a `hidden beast` number, since 2 + 3 + 0 + 97 + 3 + 561 = 666.

It is not a de Polignac number, because 230973561 - 2³ = 230973553 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (230973551) 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 in 23 ways as a sum of consecutive naturals, for example, 140191 + ... + 141828.

Almost surely, 2^230973561 is an apocalyptic number.

230973561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

230973561 is a deficient number, since it is larger than the sum of its proper divisors (179647559).

230973561 is a wasteful number, since it uses less digits than its factorization.

230973561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282045 (or 282042 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 230973561 is about 15197.8143494385. The cubic root of 230973561 is about 613.5558340952. Note that the first 3 decimals are identical.

The spelling of 230973561 in words is "two hundred thirty million, nine hundred seventy-three thousand, five hundred sixty-one".