113131811 has 6 divisors (see below), whose sum is σ = 122503860. Its totient is φ = 104429208.

The previous prime is 113131789. The next prime is 113131819. The reversal of 113131811 is 118131311.

It is not a de Polignac number, because 113131811 - 2⁶ = 113131747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113131819) 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 in 5 ways as a sum of consecutive naturals, for example, 334541 + ... + 334878.

It is an arithmetic number, because the mean of its divisors is an integer number (20417310).

Almost surely, 2^113131811 is an apocalyptic number.

113131811 is a deficient number, since it is larger than the sum of its proper divisors (9372049).

113131811 is an equidigital number, since it uses as much as digits as its factorization.

113131811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669445 (or 669432 counting only the distinct ones).

The product of its digits is 72, while the sum is 20.

The square root of 113131811 is about 10636.3438737190. The cubic root of 113131811 is about 483.6467195778.

The spelling of 113131811 in words is "one hundred thirteen million, one hundred thirty-one thousand, eight hundred eleven".