213421232 has 20 divisors (see below), whose sum is σ = 431482800. Its totient is φ = 102070848.

The previous prime is 213421223. The next prime is 213421259. The reversal of 213421232 is 232124312.

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, 289607 + ... + 290342.

It is an arithmetic number, because the mean of its divisors is an integer number (21574140).

Almost surely, 2^213421232 is an apocalyptic number.

It is an amenable number.

213421232 is an abundant number, since it is smaller than the sum of its proper divisors (218061568).

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

213421232 is a wasteful number, since it uses less digits than its factorization.

213421232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579980 (or 579974 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 213421232 is about 14608.9435620787. The cubic root of 213421232 is about 597.6026860856.

Adding to 213421232 its reverse (232124312), we get a palindrome (445545544).

The spelling of 213421232 in words is "two hundred thirteen million, four hundred twenty-one thousand, two hundred thirty-two".