213431312422 has 4 divisors (see below), whose sum is σ = 320146968636. Its totient is φ = 106715656210.

The previous prime is 213431312407. The next prime is 213431312443. The reversal of 213431312422 is 224213134312.

213431312422 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.

It is a super-3 number, since 3×213431312422³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 53357828104 + ... + 53357828107.

It is an arithmetic number, because the mean of its divisors is an integer number (80036742159).

Almost surely, 2^213431312422 is an apocalyptic number.

213431312422 is a deficient number, since it is larger than the sum of its proper divisors (106715656214).

213431312422 is a wasteful number, since it uses less digits than its factorization.

213431312422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106715656213.

The product of its digits is 6912, while the sum is 28.

Adding to 213431312422 its reverse (224213134312), we get a palindrome (437644446734).

The spelling of 213431312422 in words is "two hundred thirteen billion, four hundred thirty-one million, three hundred twelve thousand, four hundred twenty-two".