213112174 has 16 divisors (see below), whose sum is σ = 349462656. Its totient is φ = 96665400.

The previous prime is 213112169. The next prime is 213112177. The reversal of 213112174 is 471211312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213112177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769 + ... + 20659.

It is an arithmetic number, because the mean of its divisors is an integer number (21841416).

Almost surely, 2^213112174 is an apocalyptic number.

213112174 is a deficient number, since it is larger than the sum of its proper divisors (136350482).

213112174 is a wasteful number, since it uses less digits than its factorization.

213112174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20391.

The product of its digits is 336, while the sum is 22.

The square root of 213112174 is about 14598.3620314061. The cubic root of 213112174 is about 597.3140813803.

Adding to 213112174 its reverse (471211312), we get a palindrome (684323486).

The spelling of 213112174 in words is "two hundred thirteen million, one hundred twelve thousand, one hundred seventy-four".