213037172 has 12 divisors (see below), whose sum is σ = 373332960. Its totient is φ = 106370616.

The previous prime is 213037171. The next prime is 213037199. The reversal of 213037172 is 271730312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213037171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33722 + ... + 39537.

It is an arithmetic number, because the mean of its divisors is an integer number (31111080).

Almost surely, 2^213037172 is an apocalyptic number.

It is an amenable number.

213037172 is a deficient number, since it is larger than the sum of its proper divisors (160295788).

213037172 is a wasteful number, since it uses less digits than its factorization.

213037172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73990 (or 73988 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 213037172 is about 14595.7929555060. The cubic root of 213037172 is about 597.2440009051.

Adding to 213037172 its reverse (271730312), we get a palindrome (484767484).

The spelling of 213037172 in words is "two hundred thirteen million, thirty-seven thousand, one hundred seventy-two".