11913043 has 4 divisors (see below), whose sum is σ = 12166560. Its totient is φ = 11659528.

The previous prime is 11913023. The next prime is 11913047. The reversal of 11913043 is 34031911.

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 11913043 - 2⁹ = 11912531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11913047) 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, 126688 + ... + 126781.

It is an arithmetic number, because the mean of its divisors is an integer number (3041640).

Almost surely, 2^11913043 is an apocalyptic number.

11913043 is a deficient number, since it is larger than the sum of its proper divisors (253517).

11913043 is an equidigital number, since it uses as much as digits as its factorization.

11913043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253516.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 11913043 is about 3451.5276328026. The cubic root of 11913043 is about 228.3885022475.

Adding to 11913043 its reverse (34031911), we get a palindrome (45944954).

The spelling of 11913043 in words is "eleven million, nine hundred thirteen thousand, forty-three".