21233131004 has 24 divisors (see below), whose sum is σ = 38084355456. Its totient is φ = 10352160000.

The previous prime is 21233130991. The next prime is 21233131037. The reversal of 21233131004 is 40013133212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286784 + ... + 353144.

It is an arithmetic number, because the mean of its divisors is an integer number (1586848144).

Almost surely, 2^21233131004 is an apocalyptic number.

It is an amenable number.

21233131004 is a deficient number, since it is larger than the sum of its proper divisors (16851224452).

21233131004 is a wasteful number, since it uses less digits than its factorization.

21233131004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68357 (or 68355 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21233131004 its reverse (40013133212), we get a palindrome (61246264216).

The spelling of 21233131004 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirty-one thousand, four".