11870213 has 4 divisors (see below), whose sum is σ = 11897100. Its totient is φ = 11843328.

The previous prime is 11870207. The next prime is 11870219. The reversal of 11870213 is 31207811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31207811 = 593 ⋅52627.

It is an interprime number because it is at equal distance from previous prime (11870207) and next prime (11870219).

It can be written as a sum of positive squares in 2 ways, for example, as 8655364 + 3214849 = 2942^2 + 1793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11870213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11870219) 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, 12770 + ... + 13667.

It is an arithmetic number, because the mean of its divisors is an integer number (2974275).

Almost surely, 2^11870213 is an apocalyptic number.

It is an amenable number.

11870213 is a deficient number, since it is larger than the sum of its proper divisors (26887).

11870213 is an equidigital number, since it uses as much as digits as its factorization.

11870213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26886.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 11870213 is about 3445.3175470485. The cubic root of 11870213 is about 228.1144713474.

The spelling of 11870213 in words is "eleven million, eight hundred seventy thousand, two hundred thirteen".