213100402 has 16 divisors (see below), whose sum is σ = 321990552. Its totient is φ = 105773440.

The previous prime is 213100357. The next prime is 213100403. The reversal of 213100402 is 204001312.

It can be written as a sum of positive squares in 4 ways, for example, as 79905721 + 133194681 = 8939^2 + 11541^2 .

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, 259152 + ... + 259972.

Almost surely, 2^213100402 is an apocalyptic number.

213100402 is a deficient number, since it is larger than the sum of its proper divisors (108890150).

213100402 is a wasteful number, since it uses less digits than its factorization.

213100402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 213100402 is about 14597.9588299187. The cubic root of 213100402 is about 597.3030829302.

Adding to 213100402 its reverse (204001312), we get a palindrome (417101714).

The spelling of 213100402 in words is "two hundred thirteen million, one hundred thousand, four hundred two".