230111557 has 8 divisors (see below), whose sum is σ = 253857240. Its totient is φ = 207229440.

The previous prime is 230111551. The next prime is 230111561. The reversal of 230111557 is 755111032.

It can be written as a sum of positive squares in 4 ways, for example, as 11840481 + 218271076 = 3441^2 + 14774^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230111557 - 2²⁷ = 95893829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230111551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215332 + ... + 216397.

It is an arithmetic number, because the mean of its divisors is an integer number (31732155).

Almost surely, 2^230111557 is an apocalyptic number.

It is an amenable number.

230111557 is a deficient number, since it is larger than the sum of its proper divisors (23745683).

230111557 is a wasteful number, since it uses less digits than its factorization.

230111557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431783.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 230111557 is about 15169.4283676083. The cubic root of 230111557 is about 612.7916096925.

Adding to 230111557 its reverse (755111032), we get a palindrome (985222589).

The spelling of 230111557 in words is "two hundred thirty million, one hundred eleven thousand, five hundred fifty-seven".