213174 has 24 divisors (see below), whose sum is σ = 497952. Its totient is φ = 65520.

The previous prime is 213173. The next prime is 213181. The reversal of 213174 is 471312.

213174 = 122² + 123² + ... + 134².

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222 + ... + 689.

It is an arithmetic number, because the mean of its divisors is an integer number (20748).

2²¹³¹⁷⁴ is an apocalyptic number.

213174 is an abundant number, since it is smaller than the sum of its proper divisors (284778).

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

213174 is a wasteful number, since it uses less digits than its factorization.

213174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 929 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 213174 is about 461.7076997409. The cubic root of 213174 is about 59.7371838084.

Adding to 213174 its reverse (471312), we get a palindrome (684486).

It can be divided in two parts, 21317 and 4, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 213174 in words is "two hundred thirteen thousand, one hundred seventy-four".