231420255 has 16 divisors (see below), whose sum is σ = 403933824. Its totient is φ = 112203680.

The previous prime is 231420253. The next prime is 231420401. The reversal of 231420255 is 552024132.

It is not a de Polignac number, because 231420255 - 2¹ = 231420253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231420253) 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 15 ways as a sum of consecutive naturals, for example, 701109 + ... + 701438.

It is an arithmetic number, because the mean of its divisors is an integer number (25245864).

Almost surely, 2^231420255 is an apocalyptic number.

231420255 is a deficient number, since it is larger than the sum of its proper divisors (172513569).

231420255 is a wasteful number, since it uses less digits than its factorization.

231420255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402566.

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

The square root of 231420255 is about 15212.5032456858. The cubic root of 231420255 is about 613.9511105312.

Adding to 231420255 its reverse (552024132), we get a palindrome (783444387).

The spelling of 231420255 in words is "two hundred thirty-one million, four hundred twenty thousand, two hundred fifty-five".