3213923812 has 24 divisors (see below), whose sum is σ = 6173328672. Its totient is φ = 1451908800.

The previous prime is 3213923809. The next prime is 3213923813. The reversal of 3213923812 is 2183293123.

It is a super-2 number, since 2×3213923812² = 20658612538681222688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3213923813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216889 + ... + 231232.

It is an arithmetic number, because the mean of its divisors is an integer number (257222028).

Almost surely, 2^3213923812 is an apocalyptic number.

It is an amenable number.

3213923812 is a deficient number, since it is larger than the sum of its proper divisors (2959404860).

3213923812 is a wasteful number, since it uses less digits than its factorization.

3213923812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448299 (or 448297 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 3213923812 is about 56691.4791833835. The cubic root of 3213923812 is about 1475.7468303767.

The spelling of 3213923812 in words is "three billion, two hundred thirteen million, nine hundred twenty-three thousand, eight hundred twelve".