230492821 has 16 divisors (see below), whose sum is σ = 260507520. Its totient is φ = 202340160.

The previous prime is 230492809. The next prime is 230492827. The reversal of 230492821 is 128294032.

It is a cyclic number.

It is not a de Polignac number, because 230492821 - 2⁵ = 230492789 is a prime.

It is a super-3 number, since 3×230492821³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230492827) 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, 51990 + ... + 56248.

It is an arithmetic number, because the mean of its divisors is an integer number (16281720).

Almost surely, 2^230492821 is an apocalyptic number.

It is an amenable number.

230492821 is a deficient number, since it is larger than the sum of its proper divisors (30014699).

230492821 is a wasteful number, since it uses less digits than its factorization.

230492821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 230492821 is about 15181.9900210743. The cubic root of 230492821 is about 613.1298607968.

The spelling of 230492821 in words is "two hundred thirty million, four hundred ninety-two thousand, eight hundred twenty-one".