230257729 has 4 divisors (see below), whose sum is σ = 247969876. Its totient is φ = 212545584.

The previous prime is 230257723. The next prime is 230257793. The reversal of 230257729 is 927752032.

230257729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20007729 + 210250000 = 4473^2 + 14500^2 .

It is a cyclic number.

It is not a de Polignac number, because 230257729 - 2³ = 230257721 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (230257721) 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, 8856054 + ... + 8856079.

It is an arithmetic number, because the mean of its divisors is an integer number (61992469).

Almost surely, 2^230257729 is an apocalyptic number.

It is an amenable number.

230257729 is a deficient number, since it is larger than the sum of its proper divisors (17712147).

230257729 is a wasteful number, since it uses less digits than its factorization.

230257729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17712146.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 230257729 is about 15174.2455825652. The cubic root of 230257729 is about 612.9213352002.

It can be divided in two parts, 2302 and 57729, that added together give a triangular number (60031 = T₃₄₆).

The spelling of 230257729 in words is "two hundred thirty million, two hundred fifty-seven thousand, seven hundred twenty-nine".