231490111 has 4 divisors (see below), whose sum is σ = 231586192. Its totient is φ = 231394032.

The previous prime is 231490109. The next prime is 231490123. The reversal of 231490111 is 111094132.

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

It is a cyclic number.

It is not a de Polignac number, because 231490111 - 2¹ = 231490109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231490711) 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, 44331 + ... + 49276.

It is an arithmetic number, because the mean of its divisors is an integer number (57896548).

Almost surely, 2^231490111 is an apocalyptic number.

231490111 is a deficient number, since it is larger than the sum of its proper divisors (96081).

231490111 is an equidigital number, since it uses as much as digits as its factorization.

231490111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96080.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 231490111 is about 15214.7990785288. The cubic root of 231490111 is about 614.0128796189.

The spelling of 231490111 in words is "two hundred thirty-one million, four hundred ninety thousand, one hundred eleven".