213401717 has 4 divisors (see below), whose sum is σ = 213442656. Its totient is φ = 213360780.

The previous prime is 213401701. The next prime is 213401723. The reversal of 213401717 is 717104312.

It is a happy number.

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 213401717 - 2⁴ = 213401701 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 (213401317) 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, 11273 + ... + 23534.

It is an arithmetic number, because the mean of its divisors is an integer number (53360664).

Almost surely, 2^213401717 is an apocalyptic number.

It is an amenable number.

213401717 is a deficient number, since it is larger than the sum of its proper divisors (40939).

213401717 is an equidigital number, since it uses as much as digits as its factorization.

213401717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40938.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 213401717 is about 14608.2756340370. The cubic root of 213401717 is about 597.5844708221.

The spelling of 213401717 in words is "two hundred thirteen million, four hundred one thousand, seven hundred seventeen".