220131304 has 8 divisors (see below), whose sum is σ = 412746210. Its totient is φ = 110065648.

The previous prime is 220131271. The next prime is 220131323. The reversal of 220131304 is 403131022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 200788900 + 19342404 = 14170^2 + 4398^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13758199 + ... + 13758214.

Almost surely, 2^220131304 is an apocalyptic number.

It is an amenable number.

220131304 is a deficient number, since it is larger than the sum of its proper divisors (192614906).

220131304 is a wasteful number, since it uses less digits than its factorization.

220131304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27516419 (or 27516415 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220131304 is about 14836.8225708876. The cubic root of 220131304 is about 603.8011494000.

Adding to 220131304 its reverse (403131022), we get a palindrome (623262326).

The spelling of 220131304 in words is "two hundred twenty million, one hundred thirty-one thousand, three hundred four".