13009911 has 8 divisors (see below), whose sum is σ = 17518704. Its totient is φ = 8587200.

The previous prime is 13009907. The next prime is 13009921. The reversal of 13009911 is 11990031.

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

It is not a de Polignac number, because 13009911 - 2² = 13009907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13009901) 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, 21166 + ... + 21771.

It is an arithmetic number, because the mean of its divisors is an integer number (2189838).

Almost surely, 2^13009911 is an apocalyptic number.

13009911 is a deficient number, since it is larger than the sum of its proper divisors (4508793).

13009911 is a wasteful number, since it uses less digits than its factorization.

13009911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43041.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 13009911 is about 3606.9254220180. The cubic root of 13009911 is about 235.1932076397.

Adding to 13009911 its reverse (11990031), we get a palindrome (24999942).

It can be divided in two parts, 1300 and 9911, that added together give a palindrome (11211).

The spelling of 13009911 in words is "thirteen million, nine thousand, nine hundred eleven".