11951213 has 8 divisors (see below), whose sum is σ = 12638976. Its totient is φ = 11282400.

The previous prime is 11951189. The next prime is 11951243. The reversal of 11951213 is 31215911.

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

It is a cyclic number.

It is not a de Polignac number, because 11951213 - 2⁸ = 11950957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11951243) 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, 3431 + ... + 5972.

It is an arithmetic number, because the mean of its divisors is an integer number (1579872).

Almost surely, 2^11951213 is an apocalyptic number.

It is an amenable number.

11951213 is a deficient number, since it is larger than the sum of its proper divisors (687763).

11951213 is an equidigital number, since it uses as much as digits as its factorization.

11951213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9475.

The product of its digits is 270, while the sum is 23.

The square root of 11951213 is about 3457.0526464027. The cubic root of 11951213 is about 228.6321650166.

The spelling of 11951213 in words is "eleven million, nine hundred fifty-one thousand, two hundred thirteen".