213415388 has 12 divisors (see below), whose sum is σ = 373667112. Its totient is φ = 106653360.

The previous prime is 213415387. The next prime is 213415403. The reversal of 213415388 is 883514312.

It is a happy number.

It is a super-2 number, since 2×213415388² = 91092255670381088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213415387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3995 + ... + 21042.

It is an arithmetic number, because the mean of its divisors is an integer number (31138926).

Almost surely, 2^213415388 is an apocalyptic number.

It is an amenable number.

213415388 is a deficient number, since it is larger than the sum of its proper divisors (160251724).

213415388 is a wasteful number, since it uses less digits than its factorization.

213415388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27172 (or 27170 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 213415388 is about 14608.7435462465. The cubic root of 213415388 is about 597.5972314237.

The spelling of 213415388 in words is "two hundred thirteen million, four hundred fifteen thousand, three hundred eighty-eight".