220210031 has 4 divisors (see below), whose sum is σ = 220240200. Its totient is φ = 220179864.

The previous prime is 220209971. The next prime is 220210033. The reversal of 220210031 is 130012022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220210031 - 2⁶ = 220209967 is a prime.

It is a super-2 number, since 2×220210031² = 96984915506041922, 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 = 220209994 and 220210021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220210033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3485 + ... + 21273.

It is an arithmetic number, because the mean of its divisors is an integer number (55060050).

Almost surely, 2^220210031 is an apocalyptic number.

220210031 is a deficient number, since it is larger than the sum of its proper divisors (30169).

220210031 is a wasteful number, since it uses less digits than its factorization.

220210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30168.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 220210031 is about 14839.4754287340. The cubic root of 220210031 is about 603.8731212740.

Adding to 220210031 its reverse (130012022), we get a palindrome (350222053).

The spelling of 220210031 in words is "two hundred twenty million, two hundred ten thousand, thirty-one".