220431463 has 16 divisors (see below), whose sum is σ = 255467520. Its totient is φ = 186300000.

The previous prime is 220431451. The next prime is 220431479. The reversal of 220431463 is 364134022.

It is a cyclic number.

It is not a de Polignac number, because 220431463 - 2¹³ = 220423271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220431413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190938 + ... + 192088.

It is an arithmetic number, because the mean of its divisors is an integer number (15966720).

Almost surely, 2^220431463 is an apocalyptic number.

220431463 is a deficient number, since it is larger than the sum of its proper divisors (35036057).

220431463 is a wasteful number, since it uses less digits than its factorization.

220431463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 220431463 is about 14846.9344647304. The cubic root of 220431463 is about 604.0754614941.

Adding to 220431463 its reverse (364134022), we get a palindrome (584565485).

The spelling of 220431463 in words is "two hundred twenty million, four hundred thirty-one thousand, four hundred sixty-three".