220131135 has 64 divisors (see below), whose sum is σ = 453519360. Its totient is φ = 99221760.

The previous prime is 220131133. The next prime is 220131139. The reversal of 220131135 is 531131022.

It is not a de Polignac number, because 220131135 - 2¹ = 220131133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220131133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67390 + ... + 70580.

It is an arithmetic number, because the mean of its divisors is an integer number (7086240).

Almost surely, 2^220131135 is an apocalyptic number.

220131135 is an abundant number, since it is smaller than the sum of its proper divisors (233388225).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220131135 is a wasteful number, since it uses less digits than its factorization.

220131135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285 (or 3279 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 220131135 is about 14836.8168755970. The cubic root of 220131135 is about 603.8009948825.

Adding to 220131135 its reverse (531131022), we get a palindrome (751262157).

The spelling of 220131135 in words is "two hundred twenty million, one hundred thirty-one thousand, one hundred thirty-five".