213023420 has 24 divisors (see below), whose sum is σ = 448610400. Its totient is φ = 84969152.

The previous prime is 213023399. The next prime is 213023431. The reversal of 213023420 is 24320312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7655 + ... + 22014.

It is an arithmetic number, because the mean of its divisors is an integer number (18692100).

Almost surely, 2^213023420 is an apocalyptic number.

213023420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213023420 is an abundant number, since it is smaller than the sum of its proper divisors (235586980).

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

213023420 is a wasteful number, since it uses less digits than its factorization.

213023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30037 (or 30035 counting only the distinct ones).

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

The square root of 213023420 is about 14595.3218532515. The cubic root of 213023420 is about 597.2311495074.

Adding to 213023420 its reverse (24320312), we get a palindrome (237343732).

The spelling of 213023420 in words is "two hundred thirteen million, twenty-three thousand, four hundred twenty".