113131789 has 2 divisors, whose sum is σ = 113131790. Its totient is φ = 113131788.

The previous prime is 113131771. The next prime is 113131819. The reversal of 113131789 is 987131311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62252100 + 50879689 = 7890^2 + 7133^2 .

It is an emirp because it is prime and its reverse (987131311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113131789 - 2¹⁹ = 112607501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113131729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56565894 + 56565895.

It is an arithmetic number, because the mean of its divisors is an integer number (56565895).

Almost surely, 2^113131789 is an apocalyptic number.

It is an amenable number.

113131789 is a deficient number, since it is larger than the sum of its proper divisors (1).

113131789 is an equidigital number, since it uses as much as digits as its factorization.

113131789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 34.

The square root of 113131789 is about 10636.3428395290. The cubic root of 113131789 is about 483.6466882273.

The spelling of 113131789 in words is "one hundred thirteen million, one hundred thirty-one thousand, seven hundred eighty-nine".