4001323012 has 24 divisors (see below), whose sum is σ = 7471839200. Its totient is φ = 1869397056.

The previous prime is 4001322991. The next prime is 4001323021. The reversal of 4001323012 is 2103231004.

It is a happy number.

It is an unprimeable number.

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, 355062 + ... + 366157.

Almost surely, 2^4001323012 is an apocalyptic number.

It is an amenable number.

4001323012 is a deficient number, since it is larger than the sum of its proper divisors (3470516188).

4001323012 is a wasteful number, since it uses less digits than its factorization.

4001323012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721315 (or 721313 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 4001323012 is about 63256.0116668764. The cubic root of 4001323012 is about 1587.5760452298.

Adding to 4001323012 its reverse (2103231004), we get a palindrome (6104554016).

The spelling of 4001323012 in words is "four billion, one million, three hundred twenty-three thousand, twelve".