220173431 has 4 divisors (see below), whose sum is σ = 220268664. Its totient is φ = 220078200.

The previous prime is 220173407. The next prime is 220173433. The reversal of 220173431 is 134371022.

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 220173431 - 2⁶ = 220173367 is a prime.

It is a super-2 number, since 2×220173431² = 96952679436623522, 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 = 220173397 and 220173406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220173433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44060 + ... + 48801.

It is an arithmetic number, because the mean of its divisors is an integer number (55067166).

Almost surely, 2^220173431 is an apocalyptic number.

220173431 is a deficient number, since it is larger than the sum of its proper divisors (95233).

220173431 is an equidigital number, since it uses as much as digits as its factorization.

220173431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95232.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 220173431 is about 14838.2421802584. The cubic root of 220173431 is about 603.8396638505.

The spelling of 220173431 in words is "two hundred twenty million, one hundred seventy-three thousand, four hundred thirty-one".