213822781471 has 12 divisors (see below), whose sum is σ = 231589373832. Its totient is φ = 197329300896.

The previous prime is 213822781451. The next prime is 213822781531. The reversal of 213822781471 is 174187228312.

213822781471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213822781471 - 2³³ = 205232846879 is a prime.

It is a super-3 number, since 3×213822781471³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213822781451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 599220 + ... + 886966.

It is an arithmetic number, because the mean of its divisors is an integer number (19299114486).

Almost surely, 2^213822781471 is an apocalyptic number.

213822781471 is a deficient number, since it is larger than the sum of its proper divisors (17766592361).

213822781471 is a wasteful number, since it uses less digits than its factorization.

213822781471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292170 (or 292157 counting only the distinct ones).

The product of its digits is 301056, while the sum is 46.

The spelling of 213822781471 in words is "two hundred thirteen billion, eight hundred twenty-two million, seven hundred eighty-one thousand, four hundred seventy-one".