213100004 has 48 divisors (see below), whose sum is σ = 417856320. Its totient is φ = 94416000.

The previous prime is 213099989. The next prime is 213100007. The reversal of 213100004 is 400001312.

It is a happy number.

It is a super-2 number, since 2×213100004² = 90823223409600032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213100007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378227 + ... + 378789.

It is an arithmetic number, because the mean of its divisors is an integer number (8705340).

Almost surely, 2^213100004 is an apocalyptic number.

It is an amenable number.

213100004 is a deficient number, since it is larger than the sum of its proper divisors (204756316).

213100004 is a wasteful number, since it uses less digits than its factorization.

213100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 213100004 is about 14597.9451978695. The cubic root of 213100004 is about 597.3027110761.

Adding to 213100004 its reverse (400001312), we get a palindrome (613101316).

The spelling of 213100004 in words is "two hundred thirteen million, one hundred thousand, four".