11857013 has 4 divisors (see below), whose sum is σ = 13550880. Its totient is φ = 10163148.

The previous prime is 11857003. The next prime is 11857033. The reversal of 11857013 is 31075811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11857013 - 2¹⁰ = 11855989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857003) 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, 846923 + ... + 846936.

It is an arithmetic number, because the mean of its divisors is an integer number (3387720).

Almost surely, 2^11857013 is an apocalyptic number.

It is an amenable number.

11857013 is a deficient number, since it is larger than the sum of its proper divisors (1693867).

11857013 is an equidigital number, since it uses as much as digits as its factorization.

11857013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693866.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 11857013 is about 3443.4013707380. The cubic root of 11857013 is about 228.0298834843.

The spelling of 11857013 in words is "eleven million, eight hundred fifty-seven thousand, thirteen".