231422655 has 16 divisors (see below), whose sum is σ = 379308384. Its totient is φ = 120414720.

The previous prime is 231422651. The next prime is 231422663. The reversal of 231422655 is 556224132.

It is not a de Polignac number, because 231422655 - 2² = 231422651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231422651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187534 + ... + 188763.

It is an arithmetic number, because the mean of its divisors is an integer number (23706774).

Almost surely, 2^231422655 is an apocalyptic number.

231422655 is a deficient number, since it is larger than the sum of its proper divisors (147885729).

231422655 is a wasteful number, since it uses less digits than its factorization.

231422655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376346.

The product of its digits is 14400, while the sum is 30.

The square root of 231422655 is about 15212.5821279624. The cubic root of 231422655 is about 613.9532329002.

Adding to 231422655 its reverse (556224132), we get a palindrome (787646787).

The spelling of 231422655 in words is "two hundred thirty-one million, four hundred twenty-two thousand, six hundred fifty-five".