220020131 has 4 divisors (see below), whose sum is σ = 220101000. Its totient is φ = 219939264.

The previous prime is 220020091. The next prime is 220020149. The reversal of 220020131 is 131020022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220020131 - 2⁶ = 220020067 is a prime.

It is a super-2 number, since 2×220020131² = 96817716090514322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220020191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36206 + ... + 41843.

It is an arithmetic number, because the mean of its divisors is an integer number (55025250).

Almost surely, 2^220020131 is an apocalyptic number.

220020131 is a deficient number, since it is larger than the sum of its proper divisors (80869).

220020131 is an equidigital number, since it uses as much as digits as its factorization.

220020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80868.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 220020131 is about 14833.0755745395. The cubic root of 220020131 is about 603.6994863056.

Adding to 220020131 its reverse (131020022), we get a palindrome (351040153).

The spelling of 220020131 in words is "two hundred twenty million, twenty thousand, one hundred thirty-one".