31231223032304 has 10 divisors (see below), whose sum is σ = 60510494625120. Its totient is φ = 15615611516144.

The previous prime is 31231223032271. The next prime is 31231223032379. The reversal of 31231223032304 is 40323032213213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975975719744 + ... + 975975719775.

It is an arithmetic number, because the mean of its divisors is an integer number (6051049462512).

Almost surely, 2^{31231223032304} is an apocalyptic number.

It is an amenable number.

31231223032304 is a deficient number, since it is larger than the sum of its proper divisors (29279271592816).

31231223032304 is a wasteful number, since it uses less digits than its factorization.

31231223032304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951951439527 (or 1951951439521 counting only the distinct ones).

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

Adding to 31231223032304 its reverse (40323032213213), we get a palindrome (71554255245517).

The spelling of 31231223032304 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred twenty-three million, thirty-two thousand, three hundred four".