113505213133 has 4 divisors (see below), whose sum is σ = 122236383388. Its totient is φ = 104774042880.

The previous prime is 113505213119. The next prime is 113505213181. The reversal of 113505213133 is 331312505311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331312505311 = 81937 ⋅4043503.

It can be written as a sum of positive squares in 2 ways, for example, as 59373606889 + 54131606244 = 243667^2 + 232662^2 .

It is a de Polignac number, because none of the positive numbers 2^k-113505213133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113505213733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4365585108 + ... + 4365585133.

It is an arithmetic number, because the mean of its divisors is an integer number (30559095847).

Almost surely, 2^113505213133 is an apocalyptic number.

113505213133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113505213133 is a deficient number, since it is larger than the sum of its proper divisors (8731170255).

113505213133 is an equidigital number, since it uses as much as digits as its factorization.

113505213133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731170254.

The product of its (nonzero) digits is 4050, while the sum is 28.

Adding to 113505213133 its reverse (331312505311), we get a palindrome (444817718444).

The spelling of 113505213133 in words is "one hundred thirteen billion, five hundred five million, two hundred thirteen thousand, one hundred thirty-three".