230457581 has 4 divisors (see below), whose sum is σ = 230513472. Its totient is φ = 230401692.

The previous prime is 230457553. The next prime is 230457583. The reversal of 230457581 is 185754032.

It is a happy number.

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 230457581 - 2²² = 226263277 is a prime.

It is a super-2 number, since 2×230457581² = 106221393280743122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230457583) 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, 21221 + ... + 30186.

It is an arithmetic number, because the mean of its divisors is an integer number (57628368).

Almost surely, 2^230457581 is an apocalyptic number.

It is an amenable number.

230457581 is a deficient number, since it is larger than the sum of its proper divisors (55891).

230457581 is an equidigital number, since it uses as much as digits as its factorization.

230457581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55890.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 230457581 is about 15180.8293910445. The cubic root of 230457581 is about 613.0986121047.

The spelling of 230457581 in words is "two hundred thirty million, four hundred fifty-seven thousand, five hundred eighty-one".