220244531 has 8 divisors (see below), whose sum is σ = 245365680. Its totient is φ = 196291872.

The previous prime is 220244509. The next prime is 220244603. The reversal of 220244531 is 135442022.

It is a happy number.

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 220244531 - 2²⁶ = 153135667 is a prime.

It is a super-2 number, since 2×220244531² = 97015306870819922, 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 = 220244497 and 220244506.

It is not an unprimeable number, because it can be changed into a prime (220244131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291725 + ... + 292478.

It is an arithmetic number, because the mean of its divisors is an integer number (30670710).

Almost surely, 2^220244531 is an apocalyptic number.

220244531 is a deficient number, since it is larger than the sum of its proper divisors (25121149).

220244531 is a wasteful number, since it uses less digits than its factorization.

220244531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584245.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 220244531 is about 14840.6378232204. The cubic root of 220244531 is about 603.9046556152.

Adding to 220244531 its reverse (135442022), we get a palindrome (355686553).

The spelling of 220244531 in words is "two hundred twenty million, two hundred forty-four thousand, five hundred thirty-one".