220331331 has 12 divisors (see below), whose sum is σ = 347188920. Its totient is φ = 133534080.

The previous prime is 220331327. The next prime is 220331351. The reversal of 220331331 is 133133022.

220331331 is a `hidden beast` number, since 2 + 2 + 0 + 331 + 331 = 666.

It is not a de Polignac number, because 220331331 - 2² = 220331327 is a prime.

It is a super-2 number, since 2×220331331² = 97091790840463122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220331351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112686 + ... + 1112883.

It is an arithmetic number, because the mean of its divisors is an integer number (28932410).

Almost surely, 2^220331331 is an apocalyptic number.

220331331 is a deficient number, since it is larger than the sum of its proper divisors (126857589).

220331331 is a wasteful number, since it uses less digits than its factorization.

220331331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225586 (or 2225583 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 220331331 is about 14843.5619377560. The cubic root of 220331331 is about 603.9839796271.

Adding to 220331331 its reverse (133133022), we get a palindrome (353464353).

The spelling of 220331331 in words is "two hundred twenty million, three hundred thirty-one thousand, three hundred thirty-one".