230211257 has 4 divisors (see below), whose sum is σ = 231623760. Its totient is φ = 228798756.

The previous prime is 230211221. The next prime is 230211259. The reversal of 230211257 is 752112032.

It is a happy number.

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 230211257 - 2²² = 226016953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230211259) 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, 706007 + ... + 706332.

It is an arithmetic number, because the mean of its divisors is an integer number (57905940).

Almost surely, 2^230211257 is an apocalyptic number.

It is an amenable number.

230211257 is a deficient number, since it is larger than the sum of its proper divisors (1412503).

230211257 is a wasteful number, since it uses less digits than its factorization.

230211257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412502.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 230211257 is about 15172.7142265318. The cubic root of 230211257 is about 612.8800979355.

Adding to 230211257 its reverse (752112032), we get a palindrome (982323289).

The spelling of 230211257 in words is "two hundred thirty million, two hundred eleven thousand, two hundred fifty-seven".