231111230 has 64 divisors (see below), whose sum is σ = 486525312. Its totient is φ = 77414400.

The previous prime is 231111229. The next prime is 231111233. The reversal of 231111230 is 32111132.

It is a super-2 number, since 2×231111230² = 106824801264225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231111233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685622 + ... + 685958.

It is an arithmetic number, because the mean of its divisors is an integer number (7601958).

Almost surely, 2^231111230 is an apocalyptic number.

231111230 is an abundant number, since it is smaller than the sum of its proper divisors (255414082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231111230 is a wasteful number, since it uses less digits than its factorization.

231111230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 231111230 is about 15202.3429115383. The cubic root of 231111230 is about 613.6777107310.

Adding to 231111230 its reverse (32111132), we get a palindrome (263222362).

The spelling of 231111230 in words is "two hundred thirty-one million, one hundred eleven thousand, two hundred thirty".