113121887 has 2 divisors, whose sum is σ = 113121888. Its totient is φ = 113121886.

The previous prime is 113121871. The next prime is 113121907. The reversal of 113121887 is 788121311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113121887 - 2⁴ = 113121871 is a prime.

It is a super-3 number, since 3×113121887³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113121817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56560943 + 56560944.

It is an arithmetic number, because the mean of its divisors is an integer number (56560944).

Almost surely, 2^113121887 is an apocalyptic number.

113121887 is a deficient number, since it is larger than the sum of its proper divisors (1).

113121887 is an equidigital number, since it uses as much as digits as its factorization.

113121887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 32.

The square root of 113121887 is about 10635.8773498005. The cubic root of 113121887 is about 483.6325772237.

The spelling of 113121887 in words is "one hundred thirteen million, one hundred twenty-one thousand, eight hundred eighty-seven".