213171078 has 16 divisors (see below), whose sum is σ = 426499056. Its totient is φ = 71030880.

The previous prime is 213171073. The next prime is 213171103. The reversal of 213171078 is 870171312.

213171078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213171073) 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, 18508 + ... + 27728.

It is an arithmetic number, because the mean of its divisors is an integer number (26656191).

Almost surely, 2^213171078 is an apocalyptic number.

213171078 is an abundant number, since it is smaller than the sum of its proper divisors (213327978).

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

213171078 is a wasteful number, since it uses less digits than its factorization.

213171078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13079.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 213171078 is about 14600.3793786326. The cubic root of 213171078 is about 597.3691086567.

The spelling of 213171078 in words is "two hundred thirteen million, one hundred seventy-one thousand, seventy-eight".