230661421 has 4 divisors (see below), whose sum is σ = 238102144. Its totient is φ = 223220700.

The previous prime is 230661407. The next prime is 230661437. The reversal of 230661421 is 124166032.

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 230661421 - 2¹⁵ = 230628653 is a prime.

It is a super-2 number, since 2×230661421² = 106409382275478482, 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 (230661481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3720315 + ... + 3720376.

It is an arithmetic number, because the mean of its divisors is an integer number (59525536).

Almost surely, 2^230661421 is an apocalyptic number.

It is an amenable number.

230661421 is a deficient number, since it is larger than the sum of its proper divisors (7440723).

230661421 is an equidigital number, since it uses as much as digits as its factorization.

230661421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440722.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 230661421 is about 15187.5416378030. The cubic root of 230661421 is about 613.2793209827.

The spelling of 230661421 in words is "two hundred thirty million, six hundred sixty-one thousand, four hundred twenty-one".