113011861 has 2 divisors, whose sum is σ = 113011862. Its totient is φ = 113011860.

The previous prime is 113011859. The next prime is 113011883. The reversal of 113011861 is 168110311.

It is an a-pointer prime, because the next prime (113011883) can be obtained adding 113011861 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59444100 + 53567761 = 7710^2 + 7319^2 .

It is an emirp because it is prime and its reverse (168110311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113011861 - 2¹ = 113011859 is a prime.

Together with 113011859, 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 (113011361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56505930 + 56505931.

It is an arithmetic number, because the mean of its divisors is an integer number (56505931).

Almost surely, 2^113011861 is an apocalyptic number.

It is an amenable number.

113011861 is a deficient number, since it is larger than the sum of its proper divisors (1).

113011861 is an equidigital number, since it uses as much as digits as its factorization.

113011861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 113011861 is about 10630.7036926066. The cubic root of 113011861 is about 483.4757274733.

The spelling of 113011861 in words is "one hundred thirteen million, eleven thousand, eight hundred sixty-one".