231111130 has 32 divisors (see below), whose sum is σ = 437270400. Its totient is φ = 87776832.

The previous prime is 231111109. The next prime is 231111149. The reversal of 231111130 is 31111132.

It is a self number, because there is not a number n which added to its sum of digits gives 231111130.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 28356 + ... + 35584.

It is an arithmetic number, because the mean of its divisors is an integer number (13664700).

Almost surely, 2^231111130 is an apocalyptic number.

231111130 is a deficient number, since it is larger than the sum of its proper divisors (206159270).

231111130 is a wasteful number, since it uses less digits than its factorization.

231111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 231111130 is about 15202.3396225713. The cubic root of 231111130 is about 613.6776222198.

Adding to 231111130 its reverse (31111132), we get a palindrome (262222262).

The spelling of 231111130 in words is "two hundred thirty-one million, one hundred eleven thousand, one hundred thirty".