220240131 has 4 divisors (see below), whose sum is σ = 293653512. Its totient is φ = 146826752.

The previous prime is 220240129. The next prime is 220240147. The reversal of 220240131 is 131042022.

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 220240131 - 2¹ = 220240129 is a prime.

It is a super-2 number, since 2×220240131² = 97011430605794322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220240131.

It is not an unprimeable number, because it can be changed into a prime (220240171) 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, 36706686 + ... + 36706691.

It is an arithmetic number, because the mean of its divisors is an integer number (73413378).

Almost surely, 2^220240131 is an apocalyptic number.

220240131 is a deficient number, since it is larger than the sum of its proper divisors (73413381).

220240131 is an equidigital number, since it uses as much as digits as its factorization.

220240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73413380.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 220240131 is about 14840.4895808730. The cubic root of 220240131 is about 603.9006340274.

Adding to 220240131 its reverse (131042022), we get a palindrome (351282153).

The spelling of 220240131 in words is "two hundred twenty million, two hundred forty thousand, one hundred thirty-one".