230771581 has 4 divisors (see below), whose sum is σ = 240805152. Its totient is φ = 220738012.

The previous prime is 230771579. The next prime is 230771591. The reversal of 230771581 is 185177032.

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 230771581 - 2¹ = 230771579 is a prime.

It is a super-2 number, since 2×230771581² = 106511045194479122, 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 (230771521) 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, 5016751 + ... + 5016796.

It is an arithmetic number, because the mean of its divisors is an integer number (60201288).

Almost surely, 2^230771581 is an apocalyptic number.

It is an amenable number.

230771581 is a deficient number, since it is larger than the sum of its proper divisors (10033571).

230771581 is a wasteful number, since it uses less digits than its factorization.

230771581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10033570.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 230771581 is about 15191.1678616228. The cubic root of 230771581 is about 613.3769360608.

The spelling of 230771581 in words is "two hundred thirty million, seven hundred seventy-one thousand, five hundred eighty-one".