83211361 has 4 divisors (see below), whose sum is σ = 84383424. Its totient is φ = 82039300.

The previous prime is 83211343. The next prime is 83211367. The reversal of 83211361 is 16311238.

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 83211361 - 2¹⁷ = 83080289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83211367) 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, 585925 + ... + 586066.

It is an arithmetic number, because the mean of its divisors is an integer number (21095856).

Almost surely, 2^83211361 is an apocalyptic number.

It is an amenable number.

83211361 is a deficient number, since it is larger than the sum of its proper divisors (1172063).

83211361 is a wasteful number, since it uses less digits than its factorization.

83211361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172062.

The product of its digits is 864, while the sum is 25.

The square root of 83211361 is about 9122.0261455446. The cubic root of 83211361 is about 436.5770230164.

Adding to 83211361 its reverse (16311238), we get a palindrome (99522599).

The spelling of 83211361 in words is "eighty-three million, two hundred eleven thousand, three hundred sixty-one".