211396713 has 12 divisors (see below), whose sum is σ = 307607664. Its totient is φ = 128068600.

The previous prime is 211396711. The next prime is 211396723. The reversal of 211396713 is 317693112.

It is not a de Polignac number, because 211396713 - 2¹ = 211396711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (211396711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82258 + ... + 84788.

It is an arithmetic number, because the mean of its divisors is an integer number (25633972).

Almost surely, 2^211396713 is an apocalyptic number.

It is an amenable number.

211396713 is a deficient number, since it is larger than the sum of its proper divisors (96210951).

211396713 is an frugal number, since it uses more digits than its factorization.

211396713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076 (or 2545 counting only the distinct ones).

The product of its digits is 6804, while the sum is 33.

The square root of 211396713 is about 14539.4880583878. The cubic root of 211396713 is about 595.7070548479.

Multiplying 211396713 by its sum of digits (33), we get a square (6976091529 = 83523²).

211396713 divided by its sum of digits (33) gives a square (6405961 = 2531²).

The spelling of 211396713 in words is "two hundred eleven million, three hundred ninety-six thousand, seven hundred thirteen".