230219981 has 4 divisors (see below), whose sum is σ = 237646464. Its totient is φ = 222793500.

The previous prime is 230219971. The next prime is 230219989. The reversal of 230219981 is 189912032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230219981 - 2²² = 226025677 is a prime.

It is a super-2 number, since 2×230219981² = 106002479303280722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230219989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3713195 + ... + 3713256.

It is an arithmetic number, because the mean of its divisors is an integer number (59411616).

Almost surely, 2^230219981 is an apocalyptic number.

It is an amenable number.

230219981 is a deficient number, since it is larger than the sum of its proper divisors (7426483).

230219981 is an equidigital number, since it uses as much as digits as its factorization.

230219981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7426482.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 230219981 is about 15173.0017135701. The cubic root of 230219981 is about 612.8878396629.

The spelling of 230219981 in words is "two hundred thirty million, two hundred nineteen thousand, nine hundred eighty-one".