213163816 has 32 divisors (see below), whose sum is σ = 441599040. Its totient is φ = 95949568.

The previous prime is 213163813. The next prime is 213163823. The reversal of 213163816 is 618361312.

213163816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213163813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30946 + ... + 37201.

It is an arithmetic number, because the mean of its divisors is an integer number (13799970).

Almost surely, 2^213163816 is an apocalyptic number.

It is an amenable number.

213163816 is an abundant number, since it is smaller than the sum of its proper divisors (228435224).

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

213163816 is a wasteful number, since it uses less digits than its factorization.

213163816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68193 (or 68189 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 213163816 is about 14600.1306843466. The cubic root of 213163816 is about 597.3623251478.

The spelling of 213163816 in words is "two hundred thirteen million, one hundred sixty-three thousand, eight hundred sixteen".