213422343420 has 144 divisors (see below), whose sum is σ = 707373948960. Its totient is φ = 47758824960.

The previous prime is 213422343397. The next prime is 213422343473. The reversal of 213422343420 is 24343224312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1036275 + ... + 1225034.

It is an arithmetic number, because the mean of its divisors is an integer number (4912319090).

Almost surely, 2^213422343420 is an apocalyptic number.

213422343420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213422343420 is an abundant number, since it is smaller than the sum of its proper divisors (493951605540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213422343420 is a wasteful number, since it uses less digits than its factorization.

213422343420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261356 (or 2261343 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 213422343420 its reverse (24343224312), we get a palindrome (237765567732).

The spelling of 213422343420 in words is "two hundred thirteen billion, four hundred twenty-two million, three hundred forty-three thousand, four hundred twenty".