40033431321 has 48 divisors (see below), whose sum is σ = 59874730560. Its totient is φ = 23753882880.

The previous prime is 40033431313. The next prime is 40033431323. The reversal of 40033431321 is 12313433004.

40033431321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40033431321 - 2³ = 40033431313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40033431291 and 40033431300.

It is not an unprimeable number, because it can be changed into a prime (40033431323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14657526 + ... + 14660256.

It is an arithmetic number, because the mean of its divisors is an integer number (1247390220).

Almost surely, 2^40033431321 is an apocalyptic number.

It is an amenable number.

40033431321 is a deficient number, since it is larger than the sum of its proper divisors (19841299239).

40033431321 is a wasteful number, since it uses less digits than its factorization.

40033431321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786 (or 3773 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 40033431321 its reverse (12313433004), we get a palindrome (52346864325).

The spelling of 40033431321 in words is "forty billion, thirty-three million, four hundred thirty-one thousand, three hundred twenty-one".