213261713 has 4 divisors (see below), whose sum is σ = 243727680. Its totient is φ = 182795748.

The previous prime is 213261691. The next prime is 213261721. The reversal of 213261713 is 317162312.

213261713 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 213261713 - 2⁶ = 213261649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213261743) 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, 15232973 + ... + 15232986.

It is an arithmetic number, because the mean of its divisors is an integer number (60931920).

Almost surely, 2^213261713 is an apocalyptic number.

It is an amenable number.

213261713 is a deficient number, since it is larger than the sum of its proper divisors (30465967).

213261713 is an equidigital number, since it uses as much as digits as its factorization.

213261713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30465966.

The product of its digits is 1512, while the sum is 26.

The square root of 213261713 is about 14603.4829064850. The cubic root of 213261713 is about 597.4537587855.

The spelling of 213261713 in words is "two hundred thirteen million, two hundred sixty-one thousand, seven hundred thirteen".