112531021 has 4 divisors (see below), whose sum is σ = 112677372. Its totient is φ = 112384672.

The previous prime is 112531009. The next prime is 112531037. The reversal of 112531021 is 120135211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57608100 + 54922921 = 7590^2 + 7411^2 .

It is a cyclic number.

It is not a de Polignac number, because 112531021 - 2¹¹ = 112528973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112530986 and 112531004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112531051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72016 + ... + 73561.

It is an arithmetic number, because the mean of its divisors is an integer number (28169343).

Almost surely, 2^112531021 is an apocalyptic number.

It is an amenable number.

112531021 is a deficient number, since it is larger than the sum of its proper divisors (146351).

112531021 is an equidigital number, since it uses as much as digits as its factorization.

112531021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146350.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 112531021 is about 10608.0639609686. The cubic root of 112531021 is about 482.7890592565.

Adding to 112531021 its reverse (120135211), we get a palindrome (232666232).

The spelling of 112531021 in words is "one hundred twelve million, five hundred thirty-one thousand, twenty-one".