112203581 has 18 divisors (see below), whose sum is σ = 135505530. Its totient is φ = 92527680.

The previous prime is 112203577. The next prime is 112203589. The reversal of 112203581 is 185302211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 34164025 + 78039556 = 5845^2 + 8834^2 .

It is not a de Polignac number, because 112203581 - 2² = 112203577 is a prime.

It is a super-2 number, since 2×112203581² = 25179287178447122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112203589) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 399161 + ... + 399441.

It is an arithmetic number, because the mean of its divisors is an integer number (7528085).

Almost surely, 2^112203581 is an apocalyptic number.

It is an amenable number.

112203581 is a deficient number, since it is larger than the sum of its proper divisors (23301949).

112203581 is an frugal number, since it uses more digits than its factorization.

112203581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 112203581 is about 10592.6191756336. The cubic root of 112203581 is about 482.3203350873.

Adding to 112203581 its reverse (185302211), we get a palindrome (297505792).

The spelling of 112203581 in words is "one hundred twelve million, two hundred three thousand, five hundred eighty-one".