11911713 has 24 divisors (see below), whose sum is σ = 18420000. Its totient is φ = 6789120.

The previous prime is 11911709. The next prime is 11911717. The reversal of 11911713 is 31711911.

It is an interprime number because it is at equal distance from previous prime (11911709) and next prime (11911717).

It is not a de Polignac number, because 11911713 - 2² = 11911709 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11911717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8913 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (767500).

Almost surely, 2^11911713 is an apocalyptic number.

It is an amenable number.

11911713 is a deficient number, since it is larger than the sum of its proper divisors (6508287).

11911713 is a wasteful number, since it uses less digits than its factorization.

11911713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1280 counting only the distinct ones).

The product of its digits is 189, while the sum is 24.

The square root of 11911713 is about 3451.3349591136. The cubic root of 11911713 is about 228.3800026556.

The spelling of 11911713 in words is "eleven million, nine hundred eleven thousand, seven hundred thirteen".