220522631 has 8 divisors (see below), whose sum is σ = 252117024. Its totient is φ = 188951040.

The previous prime is 220522609. The next prime is 220522639. The reversal of 220522631 is 136225022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220522631 - 2⁶ = 220522567 is a prime.

It is a super-2 number, since 2×220522631² = 97260461566324322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220522597 and 220522606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220522639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29711 + ... + 36383.

It is an arithmetic number, because the mean of its divisors is an integer number (31514628).

Almost surely, 2^220522631 is an apocalyptic number.

220522631 is a deficient number, since it is larger than the sum of its proper divisors (31594393).

220522631 is an equidigital number, since it uses as much as digits as its factorization.

220522631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11401.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 220522631 is about 14850.0044107738. The cubic root of 220522631 is about 604.1587296450.

Adding to 220522631 its reverse (136225022), we get a palindrome (356747653).

The spelling of 220522631 in words is "two hundred twenty million, five hundred twenty-two thousand, six hundred thirty-one".