231422505 has 16 divisors (see below), whose sum is σ = 371831040. Its totient is φ = 122907008.

The previous prime is 231422453. The next prime is 231422537. The reversal of 231422505 is 505224132.

It is a cyclic number.

It is not a de Polignac number, because 231422505 - 2¹⁰ = 231421481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28692 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (23239440).

Almost surely, 2^231422505 is an apocalyptic number.

It is an amenable number.

231422505 is a deficient number, since it is larger than the sum of its proper divisors (140408535).

231422505 is a wasteful number, since it uses less digits than its factorization.

231422505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64800.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 231422505 is about 15212.5771978321. The cubic root of 231422505 is about 613.9531002526.

Adding to 231422505 its reverse (505224132), we get a palindrome (736646637).

The spelling of 231422505 in words is "two hundred thirty-one million, four hundred twenty-two thousand, five hundred five".