231422311 has 4 divisors (see below), whose sum is σ = 231543000. Its totient is φ = 231301624.

The previous prime is 231422293. The next prime is 231422329. The reversal of 231422311 is 113224132.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (231422293) and next prime (231422329).

It is a cyclic number.

It is not a de Polignac number, because 231422311 - 2⁷ = 231422183 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 (231422341) 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, 57421 + ... + 61318.

It is an arithmetic number, because the mean of its divisors is an integer number (57885750).

Almost surely, 2^231422311 is an apocalyptic number.

231422311 is a deficient number, since it is larger than the sum of its proper divisors (120689).

231422311 is a wasteful number, since it uses less digits than its factorization.

231422311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120688.

The product of its digits is 288, while the sum is 19.

The square root of 231422311 is about 15212.5708215278. The cubic root of 231422311 is about 613.9529286949.

Adding to 231422311 its reverse (113224132), we get a palindrome (344646443).

The spelling of 231422311 in words is "two hundred thirty-one million, four hundred twenty-two thousand, three hundred eleven".