213331402 has 16 divisors (see below), whose sum is σ = 346032000. Its totient is φ = 98254528.

The previous prime is 213331399. The next prime is 213331409. The reversal of 213331402 is 204133312.

It is a self number, because there is not a number n which added to its sum of digits gives 213331402.

It is not an unprimeable number, because it can be changed into a prime (213331409) 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, 65152 + ... + 68347.

It is an arithmetic number, because the mean of its divisors is an integer number (21627000).

Almost surely, 2^213331402 is an apocalyptic number.

213331402 is a deficient number, since it is larger than the sum of its proper divisors (132700598).

213331402 is a wasteful number, since it uses less digits than its factorization.

213331402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133565.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 213331402 is about 14605.8687519777. The cubic root of 213331402 is about 597.5188297259.

Adding to 213331402 its reverse (204133312), we get a palindrome (417464714).

The spelling of 213331402 in words is "two hundred thirteen million, three hundred thirty-one thousand, four hundred two".