212426913 has 4 divisors (see below), whose sum is σ = 283235888. Its totient is φ = 141617940.

The previous prime is 212426909. The next prime is 212426927. The reversal of 212426913 is 319624212.

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 not a de Polignac number, because 212426913 - 2² = 212426909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212426933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35404483 + ... + 35404488.

It is an arithmetic number, because the mean of its divisors is an integer number (70808972).

Almost surely, 2^212426913 is an apocalyptic number.

It is an amenable number.

212426913 is a deficient number, since it is larger than the sum of its proper divisors (70808975).

212426913 is an equidigital number, since it uses as much as digits as its factorization.

212426913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70808974.

The product of its digits is 5184, while the sum is 30.

The square root of 212426913 is about 14574.8726581058. The cubic root of 212426913 is about 596.6731739179.

The spelling of 212426913 in words is "two hundred twelve million, four hundred twenty-six thousand, nine hundred thirteen".