220550031 has 12 divisors (see below), whose sum is σ = 343078008. Its totient is φ = 135723024.

The previous prime is 220550021. The next prime is 220550039. The reversal of 220550031 is 130055022.

It is a happy number.

It is not a de Polignac number, because 220550031 - 2⁹ = 220549519 is a prime.

It is a super-2 number, since 2×220550031² = 97284632348201922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220549986 and 220550013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220550039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 942405 + ... + 942638.

It is an arithmetic number, because the mean of its divisors is an integer number (28589834).

Almost surely, 2^220550031 is an apocalyptic number.

220550031 is a deficient number, since it is larger than the sum of its proper divisors (122527977).

220550031 is a wasteful number, since it uses less digits than its factorization.

220550031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885062 (or 1885059 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 220550031 is about 14850.9269407670. The cubic root of 220550031 is about 604.1837509070.

The spelling of 220550031 in words is "two hundred twenty million, five hundred fifty thousand, thirty-one".