113305143 has 8 divisors (see below), whose sum is σ = 172655488. Its totient is φ = 64745784.

The previous prime is 113305123. The next prime is 113305147. The reversal of 113305143 is 341503311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113305143 - 2⁵ = 113305111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5395483 = 113305143 / (1 + 1 + 3 + 3 + 0 + 5 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113305147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2697721 + ... + 2697762.

It is an arithmetic number, because the mean of its divisors is an integer number (21581936).

Almost surely, 2^113305143 is an apocalyptic number.

113305143 is a deficient number, since it is larger than the sum of its proper divisors (59350345).

113305143 is an equidigital number, since it uses as much as digits as its factorization.

113305143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5395493.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 113305143 is about 10644.4888557413. The cubic root of 113305143 is about 483.8935958409.

Adding to 113305143 its reverse (341503311), we get a palindrome (454808454).

The spelling of 113305143 in words is "one hundred thirteen million, three hundred five thousand, one hundred forty-three".