40112321 has 4 divisors (see below), whose sum is σ = 40203312. Its totient is φ = 40021332.

The previous prime is 40112279. The next prime is 40112339. The reversal of 40112321 is 12321104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40112321 - 2⁶ = 40112257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40112296 and 40112305.

It is not an unprimeable number, because it can be changed into a prime (40112521) 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, 44831 + ... + 45716.

It is an arithmetic number, because the mean of its divisors is an integer number (10050828).

Almost surely, 2^40112321 is an apocalyptic number.

It is an amenable number.

40112321 is a deficient number, since it is larger than the sum of its proper divisors (90991).

40112321 is an equidigital number, since it uses as much as digits as its factorization.

40112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90990.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 40112321 is about 6333.4288501569. The cubic root of 40112321 is about 342.3150005231.

Adding to 40112321 its reverse (12321104), we get a palindrome (52433425).

The spelling of 40112321 in words is "forty million, one hundred twelve thousand, three hundred twenty-one".