113203243 has 4 divisors (see below), whose sum is σ = 113673208. Its totient is φ = 112733280.

The previous prime is 113203231. The next prime is 113203261. The reversal of 113203243 is 342302311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113203243 - 2¹³ = 113195051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113203243.

It is not an unprimeable number, because it can be changed into a prime (113203543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234621 + ... + 235102.

It is an arithmetic number, because the mean of its divisors is an integer number (28418302).

Almost surely, 2^113203243 is an apocalyptic number.

113203243 is a deficient number, since it is larger than the sum of its proper divisors (469965).

113203243 is an equidigital number, since it uses as much as digits as its factorization.

113203243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469964.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 113203243 is about 10639.7012646033. The cubic root of 113203243 is about 483.7484904929.

Adding to 113203243 its reverse (342302311), we get a palindrome (455505554).

The spelling of 113203243 in words is "one hundred thirteen million, two hundred three thousand, two hundred forty-three".