220431324 has 24 divisors (see below), whose sum is σ = 514579968. Its totient is φ = 73442800.

The previous prime is 220431313. The next prime is 220431329. The reversal of 220431324 is 423134022.

220431324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×220431324³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220431324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220431329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47299 + ... + 51749.

It is an arithmetic number, because the mean of its divisors is an integer number (21440832).

Almost surely, 2^220431324 is an apocalyptic number.

It is an amenable number.

220431324 is an abundant number, since it is smaller than the sum of its proper divisors (294148644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220431324 is a wasteful number, since it uses less digits than its factorization.

220431324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8585 (or 8583 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 220431324 is about 14846.9297836287. The cubic root of 220431324 is about 604.0753345211.

Adding to 220431324 its reverse (423134022), we get a palindrome (643565346).

The spelling of 220431324 in words is "two hundred twenty million, four hundred thirty-one thousand, three hundred twenty-four".