220131322 has 4 divisors (see below), whose sum is σ = 330196986. Its totient is φ = 110065660.

The previous prime is 220131271. The next prime is 220131323. The reversal of 220131322 is 223131022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188760121 + 31371201 = 13739^2 + 5601^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220131296 and 220131305.

It is not an unprimeable number, because it can be changed into a prime (220131323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55032829 + ... + 55032832.

Almost surely, 2^220131322 is an apocalyptic number.

220131322 is a deficient number, since it is larger than the sum of its proper divisors (110065664).

220131322 is a wasteful number, since it uses less digits than its factorization.

220131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110065663.

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

The square root of 220131322 is about 14836.8231774865. The cubic root of 220131322 is about 603.8011658575.

Adding to 220131322 its reverse (223131022), we get a palindrome (443262344).

The spelling of 220131322 in words is "two hundred twenty million, one hundred thirty-one thousand, three hundred twenty-two".