220200031 has 4 divisors (see below), whose sum is σ = 233152992. Its totient is φ = 207247072.

The previous prime is 220200011. The next prime is 220200059. The reversal of 220200031 is 130002022.

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 220200031 - 2¹⁵ = 220167263 is a prime.

It is a super-2 number, since 2×220200031² = 96976107304801922, 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 = 220199990 and 220200017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200011) 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, 6476455 + ... + 6476488.

It is an arithmetic number, because the mean of its divisors is an integer number (58288248).

Almost surely, 2^220200031 is an apocalyptic number.

220200031 is a deficient number, since it is larger than the sum of its proper divisors (12952961).

220200031 is a wasteful number, since it uses less digits than its factorization.

220200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12952960.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 220200031 is about 14839.1384857747. The cubic root of 220200031 is about 603.8639802695.

Adding to 220200031 its reverse (130002022), we get a palindrome (350202053).

The spelling of 220200031 in words is "two hundred twenty million, two hundred thousand, thirty-one".