31221233320304 has 40 divisors (see below), whose sum is σ = 61666293140352. Its totient is φ = 15307674387200.

The previous prime is 31221233320159. The next prime is 31221233320337. The reversal of 31221233320304 is 40302333212213.

It is a happy number.

It is a congruent 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, 8552147 + ... + 11643954.

Almost surely, 2^{31221233320304} is an apocalyptic number.

It is an amenable number.

31221233320304 is a deficient number, since it is larger than the sum of its proper divisors (30445059820048).

31221233320304 is a wasteful number, since it uses less digits than its factorization.

31221233320304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20197985 (or 20197979 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31221233320304 its reverse (40302333212213), we get a palindrome (71523566532517).

The spelling of 31221233320304 in words is "thirty-one trillion, two hundred twenty-one billion, two hundred thirty-three million, three hundred twenty thousand, three hundred four".