212424131 has 4 divisors (see below), whose sum is σ = 216024600. Its totient is φ = 208823664.

The previous prime is 212424097. The next prime is 212424151. The reversal of 212424131 is 131424212.

212424131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212424131 is a prime.

It is a super-2 number, since 2×212424131² = 90248022862210322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212424151) 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, 1800146 + ... + 1800263.

It is an arithmetic number, because the mean of its divisors is an integer number (54006150).

Almost surely, 2^212424131 is an apocalyptic number.

212424131 is a deficient number, since it is larger than the sum of its proper divisors (3600469).

212424131 is an equidigital number, since it uses as much as digits as its factorization.

212424131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600468.

The product of its digits is 384, while the sum is 20.

The square root of 212424131 is about 14574.7772195667. Note that the first 3 decimals coincide. The cubic root of 212424131 is about 596.6705691757.

Adding to 212424131 its reverse (131424212), we get a palindrome (343848343).

The spelling of 212424131 in words is "two hundred twelve million, four hundred twenty-four thousand, one hundred thirty-one".