213311012 has 6 divisors (see below), whose sum is σ = 373294278. Its totient is φ = 106655504.

The previous prime is 213311011. The next prime is 213311029. The reversal of 213311012 is 210113312.

It can be written as a sum of positive squares in only one way, i.e., 167288356 + 46022656 = 12934^2 + 6784^2 .

It is not an unprimeable number, because it can be changed into a prime (213311011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26663873 + ... + 26663880.

It is an arithmetic number, because the mean of its divisors is an integer number (62215713).

Almost surely, 2^213311012 is an apocalyptic number.

It is an amenable number.

213311012 is a deficient number, since it is larger than the sum of its proper divisors (159983266).

213311012 is a wasteful number, since it uses less digits than its factorization.

213311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53327757 (or 53327755 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 213311012 is about 14605.1707282044. The cubic root of 213311012 is about 597.4997923705.

Adding to 213311012 its reverse (210113312), we get a palindrome (423424324).

The spelling of 213311012 in words is "two hundred thirteen million, three hundred eleven thousand, twelve".