113440443421 has 8 divisors (see below), whose sum is σ = 117668714240. Its totient is φ = 109284450912.

The previous prime is 113440443409. The next prime is 113440443517. The reversal of 113440443421 is 124344044311.

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 113440443421 - 2⁹ = 113440442909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113440443401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18066381 + ... + 18072658.

It is an arithmetic number, because the mean of its divisors is an integer number (14708589280).

Almost surely, 2^113440443421 is an apocalyptic number.

It is an amenable number.

113440443421 is a deficient number, since it is larger than the sum of its proper divisors (4228270819).

113440443421 is an equidigital number, since it uses as much as digits as its factorization.

113440443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36139155.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 113440443421 its reverse (124344044311), we get a palindrome (237784487732).

The spelling of 113440443421 in words is "one hundred thirteen billion, four hundred forty million, four hundred forty-three thousand, four hundred twenty-one".