113621543 has 6 divisors (see below), whose sum is σ = 132172056. Its totient is φ = 97389852.

The previous prime is 113621531. The next prime is 113621569. The reversal of 113621543 is 345126311.

It is not a de Polignac number, because 113621543 - 2¹⁸ = 113359399 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 (113621593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1159355 + ... + 1159452.

It is an arithmetic number, because the mean of its divisors is an integer number (22028676).

Almost surely, 2^113621543 is an apocalyptic number.

113621543 is a deficient number, since it is larger than the sum of its proper divisors (18550513).

113621543 is an equidigital number, since it uses as much as digits as its factorization.

113621543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318821 (or 2318814 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 113621543 is about 10659.3406456497. The cubic root of 113621543 is about 484.3435949559.

Adding to 113621543 its reverse (345126311), we get a palindrome (458747854).

The spelling of 113621543 in words is "one hundred thirteen million, six hundred twenty-one thousand, five hundred forty-three".