213423020 has 12 divisors (see below), whose sum is σ = 448188384. Its totient is φ = 85369200.

The previous prime is 213423017. The next prime is 213423037. The reversal of 213423020 is 20324312.

213423020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213423020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5335556 + ... + 5335595.

It is an arithmetic number, because the mean of its divisors is an integer number (37349032).

Almost surely, 2^213423020 is an apocalyptic number.

213423020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213423020 is an abundant number, since it is smaller than the sum of its proper divisors (234765364).

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

213423020 is a wasteful number, since it uses less digits than its factorization.

213423020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671160 (or 10671158 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 213423020 is about 14609.0047573406. The cubic root of 213423020 is about 597.6043549458.

Adding to 213423020 its reverse (20324312), we get a palindrome (233747332).

The spelling of 213423020 in words is "two hundred thirteen million, four hundred twenty-three thousand, twenty".