213112402 has 4 divisors (see below), whose sum is σ = 319668606. Its totient is φ = 106556200.

The previous prime is 213112399. The next prime is 213112451. The reversal of 213112402 is 204211312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 164378041 + 48734361 = 12821^2 + 6981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53278099 + ... + 53278102.

Almost surely, 2^213112402 is an apocalyptic number.

213112402 is a deficient number, since it is larger than the sum of its proper divisors (106556204).

213112402 is a wasteful number, since it uses less digits than its factorization.

213112402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106556203.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 213112402 is about 14598.3698404993. The cubic root of 213112402 is about 597.3142943942.

Adding to 213112402 its reverse (204211312), we get a palindrome (417323714).

The spelling of 213112402 in words is "two hundred thirteen million, one hundred twelve thousand, four hundred two".