113440981 has 2 divisors, whose sum is σ = 113440982. Its totient is φ = 113440980.

The previous prime is 113440979. The next prime is 113441021. The reversal of 113440981 is 189044311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102111025 + 11329956 = 10105^2 + 3366^2 .

It is a cyclic number.

It is not a de Polignac number, because 113440981 - 2¹ = 113440979 is a prime.

It is a super-2 number, since 2×113440981² = 25737712340484722, which contains 22 as substring.

Together with 113440979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113440931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56720490 + 56720491.

It is an arithmetic number, because the mean of its divisors is an integer number (56720491).

Almost surely, 2^113440981 is an apocalyptic number.

It is an amenable number.

113440981 is a deficient number, since it is larger than the sum of its proper divisors (1).

113440981 is an equidigital number, since it uses as much as digits as its factorization.

113440981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 113440981 is about 10650.8676172413. The cubic root of 113440981 is about 484.0868935922.

The spelling of 113440981 in words is "one hundred thirteen million, four hundred forty thousand, nine hundred eighty-one".