11431212 has 24 divisors (see below), whose sum is σ = 28724976. Its totient is φ = 3517248.

The previous prime is 11431183. The next prime is 11431223. The reversal of 11431212 is 21213411.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11431191 and 11431200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36483 + ... + 36794.

It is an arithmetic number, because the mean of its divisors is an integer number (1196874).

Almost surely, 2^11431212 is an apocalyptic number.

11431212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11431212 is an abundant number, since it is smaller than the sum of its proper divisors (17293764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11431212 is a wasteful number, since it uses less digits than its factorization.

11431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73297 (or 73295 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 11431212 is about 3381.0075421389. The cubic root of 11431212 is about 225.2669227243.

Adding to 11431212 its reverse (21213411), we get a palindrome (32644623).

The spelling of 11431212 in words is "eleven million, four hundred thirty-one thousand, two hundred twelve".