231422111 has 4 divisors (see below), whose sum is σ = 233188824. Its totient is φ = 229655400.

The previous prime is 231422101. The next prime is 231422123. The reversal of 231422111 is 111224132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231422111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231422111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231422101) 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 3 ways as a sum of consecutive naturals, for example, 883160 + ... + 883421.

It is an arithmetic number, because the mean of its divisors is an integer number (58297206).

Almost surely, 2^231422111 is an apocalyptic number.

231422111 is a deficient number, since it is larger than the sum of its proper divisors (1766713).

231422111 is a wasteful number, since it uses less digits than its factorization.

231422111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766712.

The product of its digits is 96, while the sum is 17.

The square root of 231422111 is about 15212.5642480155. The cubic root of 231422111 is about 613.9527518312.

Adding to 231422111 its reverse (111224132), we get a palindrome (342646243).

The spelling of 231422111 in words is "two hundred thirty-one million, four hundred twenty-two thousand, one hundred eleven".