230513261 has 4 divisors (see below), whose sum is σ = 251469024. Its totient is φ = 209557500.

The previous prime is 230513243. The next prime is 230513267. The reversal of 230513261 is 162315032.

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 230513261 - 2⁶ = 230513197 is a prime.

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 (230513267) 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, 10477865 + ... + 10477886.

It is an arithmetic number, because the mean of its divisors is an integer number (62867256).

Almost surely, 2^230513261 is an apocalyptic number.

It is an amenable number.

230513261 is a deficient number, since it is larger than the sum of its proper divisors (20955763).

230513261 is a wasteful number, since it uses less digits than its factorization.

230513261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20955762.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 230513261 is about 15182.6631721843. The cubic root of 230513261 is about 613.1479842881.

Adding to 230513261 its reverse (162315032), we get a palindrome (392828293).

The spelling of 230513261 in words is "two hundred thirty million, five hundred thirteen thousand, two hundred sixty-one".