213011304 has 48 divisors (see below), whose sum is σ = 585348960. Its totient is φ = 64548000.

The previous prime is 213011287. The next prime is 213011311. The reversal of 213011304 is 403110312.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 33772 + ... + 39579.

It is an arithmetic number, because the mean of its divisors is an integer number (12194770).

Almost surely, 2^213011304 is an apocalyptic number.

213011304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213011304 is an abundant number, since it is smaller than the sum of its proper divisors (372337656).

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

213011304 is a wasteful number, since it uses less digits than its factorization.

213011304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73382 (or 73367 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213011304 is about 14594.9067828472. The cubic root of 213011304 is about 597.2198265117.

Adding to 213011304 its reverse (403110312), we get a palindrome (616121616).

The spelling of 213011304 in words is "two hundred thirteen million, eleven thousand, three hundred four".