220531036 has 48 divisors (see below), whose sum is σ = 430456320. Its totient is φ = 98017920.

The previous prime is 220531027. The next prime is 220531037. The reversal of 220531036 is 630135022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 220530998 and 220531016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220531037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704416 + ... + 704728.

It is an arithmetic number, because the mean of its divisors is an integer number (8967840).

Almost surely, 2^220531036 is an apocalyptic number.

It is an amenable number.

220531036 is a deficient number, since it is larger than the sum of its proper divisors (209925284).

220531036 is a wasteful number, since it uses less digits than its factorization.

220531036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 220531036 is about 14850.2874046262. The cubic root of 220531036 is about 604.1664051831.

Adding to 220531036 its reverse (630135022), we get a palindrome (850666058).

The spelling of 220531036 in words is "two hundred twenty million, five hundred thirty-one thousand, thirty-six".