220434531 has 8 divisors (see below), whose sum is σ = 294059280. Its totient is φ = 146883072.

The previous prime is 220434527. The next prime is 220434547. The reversal of 220434531 is 135434022.

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

It is not a de Polignac number, because 220434531 - 2² = 220434527 is a prime.

It is a super-4 number, since 4×220434531⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (220434581) 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, 10870 + ... + 23643.

It is an arithmetic number, because the mean of its divisors is an integer number (36757410).

Almost surely, 2^220434531 is an apocalyptic number.

220434531 is a deficient number, since it is larger than the sum of its proper divisors (73624749).

220434531 is a wasteful number, since it uses less digits than its factorization.

220434531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36645.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 220434531 is about 14847.0377853631. The cubic root of 220434531 is about 604.0782640204.

Adding to 220434531 its reverse (135434022), we get a palindrome (355868553).

The spelling of 220434531 in words is "two hundred twenty million, four hundred thirty-four thousand, five hundred thirty-one".