213173916 has 48 divisors (see below), whose sum is σ = 508569600. Its totient is φ = 69481152.

The previous prime is 213173911. The next prime is 213173921. The reversal of 213173916 is 619371312.

213173916 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213173911) and next prime (213173921).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213173911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102301 + ... + 104363.

It is an arithmetic number, because the mean of its divisors is an integer number (10595200).

Almost surely, 2^213173916 is an apocalyptic number.

It is an amenable number.

213173916 is an abundant number, since it is smaller than the sum of its proper divisors (295395684).

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

213173916 is a wasteful number, since it uses less digits than its factorization.

213173916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258 (or 2256 counting only the distinct ones).

The product of its digits is 6804, while the sum is 33.

The square root of 213173916 is about 14600.4765675645. The cubic root of 213173916 is about 597.3717596199.

The spelling of 213173916 in words is "two hundred thirteen million, one hundred seventy-three thousand, nine hundred sixteen".