213111402 has 16 divisors (see below), whose sum is σ = 487111872. Its totient is φ = 60888960.

The previous prime is 213111383. The next prime is 213111407. The reversal of 213111402 is 204111312.

It is not an unprimeable number, because it can be changed into a prime (213111407) 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, 2536999 + ... + 2537082.

It is an arithmetic number, because the mean of its divisors is an integer number (30444492).

Almost surely, 2^213111402 is an apocalyptic number.

213111402 is an abundant number, since it is smaller than the sum of its proper divisors (274000470).

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

213111402 is a wasteful number, since it uses less digits than its factorization.

213111402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074093.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 213111402 is about 14598.3355900596. The cubic root of 213111402 is about 597.3133601216.

Adding to 213111402 its reverse (204111312), we get a palindrome (417222714).

The spelling of 213111402 in words is "two hundred thirteen million, one hundred eleven thousand, four hundred two".