213388912 has 20 divisors (see below), whose sum is σ = 451026936. Its totient is φ = 96994880.

The previous prime is 213388891. The next prime is 213388921. The reversal of 213388912 is 219883312.

It is a congruent number.

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, 606043 + ... + 606394.

Almost surely, 2^213388912 is an apocalyptic number.

213388912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213388912 is an abundant number, since it is smaller than the sum of its proper divisors (237638024).

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

213388912 is a wasteful number, since it uses less digits than its factorization.

213388912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212456 (or 1212450 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 213388912 is about 14607.8373484921. The cubic root of 213388912 is about 597.5725180564.

The spelling of 213388912 in words is "two hundred thirteen million, three hundred eighty-eight thousand, nine hundred twelve".