230356181 has 4 divisors (see below), whose sum is σ = 251297664. Its totient is φ = 209414700.

The previous prime is 230356169. The next prime is 230356199. The reversal of 230356181 is 181653032.

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 not a de Polignac number, because 230356181 - 2¹⁸ = 230094037 is a prime.

It is a super-2 number, since 2×230356181² = 106127940249809522, 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 (230356121) 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, 10470725 + ... + 10470746.

It is an arithmetic number, because the mean of its divisors is an integer number (62824416).

Almost surely, 2^230356181 is an apocalyptic number.

It is an amenable number.

230356181 is a deficient number, since it is larger than the sum of its proper divisors (20941483).

230356181 is a wasteful number, since it uses less digits than its factorization.

230356181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20941482.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 230356181 is about 15177.4892851222. The cubic root of 230356181 is about 613.0086789681.

The spelling of 230356181 in words is "two hundred thirty million, three hundred fifty-six thousand, one hundred eighty-one".