113622013 has 4 divisors (see below), whose sum is σ = 114064380. Its totient is φ = 113179648.

The previous prime is 113621941. The next prime is 113622031. The reversal of 113622013 is 310226311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310226311 = 29 ⋅10697459.

It can be written as a sum of positive squares in 2 ways, for example, as 94420089 + 19201924 = 9717^2 + 4382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113622013 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 (113622043) 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, 220798 + ... + 221311.

It is an arithmetic number, because the mean of its divisors is an integer number (28516095).

Almost surely, 2^113622013 is an apocalyptic number.

It is an amenable number.

113622013 is a deficient number, since it is larger than the sum of its proper divisors (442367).

113622013 is an equidigital number, since it uses as much as digits as its factorization.

113622013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442366.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 113622013 is about 10659.3626920187. The cubic root of 113622013 is about 484.3442627904.

Adding to 113622013 its reverse (310226311), we get a palindrome (423848324).

The spelling of 113622013 in words is "one hundred thirteen million, six hundred twenty-two thousand, thirteen".