212151413 has 4 divisors (see below), whose sum is σ = 215317920. Its totient is φ = 208984908.

The previous prime is 212151353. The next prime is 212151491. The reversal of 212151413 is 314151212.

212151413 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212151413 - 2⁸ = 212151157 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 (212151493) 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, 1583153 + ... + 1583286.

It is an arithmetic number, because the mean of its divisors is an integer number (53829480).

Almost surely, 2^212151413 is an apocalyptic number.

It is an amenable number.

212151413 is a deficient number, since it is larger than the sum of its proper divisors (3166507).

212151413 is an equidigital number, since it uses as much as digits as its factorization.

212151413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166506.

The product of its digits is 240, while the sum is 20.

The square root of 212151413 is about 14565.4183942652. The cubic root of 212151413 is about 596.4151172021.

The spelling of 212151413 in words is "two hundred twelve million, one hundred fifty-one thousand, four hundred thirteen".