213066312 has 32 divisors (see below), whose sum is σ = 539088480. Its totient is φ = 70165760.

The previous prime is 213066311. The next prime is 213066383. The reversal of 213066312 is 213660312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (213066311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51489 + ... + 55472.

It is an arithmetic number, because the mean of its divisors is an integer number (16846515).

Almost surely, 2^213066312 is an apocalyptic number.

It is an amenable number.

213066312 is an abundant number, since it is smaller than the sum of its proper divisors (326022168).

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

213066312 is a wasteful number, since it uses less digits than its factorization.

213066312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107053 (or 107049 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 213066312 is about 14596.7911542229. The cubic root of 213066312 is about 597.2712307332.

The spelling of 213066312 in words is "two hundred thirteen million, sixty-six thousand, three hundred twelve".