231435655 has 16 divisors (see below), whose sum is σ = 304570368. Its totient is φ = 167428000.

The previous prime is 231435649. The next prime is 231435691. The reversal of 231435655 is 556534132.

It is not a de Polignac number, because 231435655 - 2⁷ = 231435527 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 231435655.

It is a congruent number.

It is an unprimeable number.

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, 511 + ... + 21520.

It is an arithmetic number, because the mean of its divisors is an integer number (19035648).

Almost surely, 2^231435655 is an apocalyptic number.

231435655 is a deficient number, since it is larger than the sum of its proper divisors (73134713).

231435655 is a wasteful number, since it uses less digits than its factorization.

231435655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22238.

The product of its digits is 54000, while the sum is 34.

The square root of 231435655 is about 15213.0093998525. The cubic root of 231435655 is about 613.9647288110.

Adding to 231435655 its reverse (556534132), we get a palindrome (787969787).

The spelling of 231435655 in words is "two hundred thirty-one million, four hundred thirty-five thousand, six hundred fifty-five".