2204172731 has 8 divisors (see below), whose sum is σ = 2331515040. Its totient is φ = 2079456192.

The previous prime is 2204172721. The next prime is 2204172743. The reversal of 2204172731 is 1372714022.

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

It is a cyclic number.

It is not a de Polignac number, because 2204172731 - 2²⁶ = 2137063867 is a prime.

It is a super-2 number, since 2×2204172731² = 9716754856167996722, 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 = 2204172694 and 2204172703.

It is not an unprimeable number, because it can be changed into a prime (2204172721) 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 7 ways as a sum of consecutive naturals, for example, 654716 + ... + 658073.

It is an arithmetic number, because the mean of its divisors is an integer number (291439380).

Almost surely, 2^2204172731 is an apocalyptic number.

2204172731 is a deficient number, since it is larger than the sum of its proper divisors (127342309).

2204172731 is a wasteful number, since it uses less digits than its factorization.

2204172731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312885.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 2204172731 is about 46948.6179881794. The cubic root of 2204172731 is about 1301.4132030219.

Adding to 2204172731 its reverse (1372714022), we get a palindrome (3576886753).

The spelling of 2204172731 in words is "two billion, two hundred four million, one hundred seventy-two thousand, seven hundred thirty-one".