220331004 has 48 divisors (see below), whose sum is σ = 529501728. Its totient is φ = 71255808.

The previous prime is 220331003. The next prime is 220331039. The reversal of 220331004 is 400133022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220331003) 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, 300222 + ... + 300954.

It is an arithmetic number, because the mean of its divisors is an integer number (11031286).

Almost surely, 2^220331004 is an apocalyptic number.

It is an amenable number.

220331004 is an abundant number, since it is smaller than the sum of its proper divisors (309170724).

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

220331004 is a wasteful number, since it uses less digits than its factorization.

220331004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 220331004 is about 14843.5509228756. The cubic root of 220331004 is about 603.9836808304.

Adding to 220331004 its reverse (400133022), we get a palindrome (620464026).

The spelling of 220331004 in words is "two hundred twenty million, three hundred thirty-one thousand, four".