213100404 has 24 divisors (see below), whose sum is σ = 542437728. Its totient is φ = 64575840.

The previous prime is 213100403. The next prime is 213100453. The reversal of 213100404 is 404001312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213100403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807067 + ... + 807330.

It is an arithmetic number, because the mean of its divisors is an integer number (22601572).

Almost surely, 2^213100404 is an apocalyptic number.

It is an amenable number.

213100404 is an abundant number, since it is smaller than the sum of its proper divisors (329337324).

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

213100404 is a wasteful number, since it uses less digits than its factorization.

213100404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614415 (or 1614413 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213100404 is about 14597.9588984214. The cubic root of 213100404 is about 597.3030847988.

Adding to 213100404 its reverse (404001312), we get a palindrome (617101716).

The spelling of 213100404 in words is "two hundred thirteen million, one hundred thousand, four hundred four".