31220123032304 has 40 divisors (see below), whose sum is σ = 60586530236208. Its totient is φ = 15584891985920.

The previous prime is 31220123032303. The next prime is 31220123032381. The reversal of 31220123032304 is 40323032102213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220123032303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227173499 + ... + 227310885.

Almost surely, 2^{31220123032304} is an apocalyptic number.

It is an amenable number.

31220123032304 is a deficient number, since it is larger than the sum of its proper divisors (29366407203904).

31220123032304 is a wasteful number, since it uses less digits than its factorization.

31220123032304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160193 (or 160187 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31220123032304 its reverse (40323032102213), we get a palindrome (71543155134517).

The spelling of 31220123032304 in words is "thirty-one trillion, two hundred twenty billion, one hundred twenty-three million, thirty-two thousand, three hundred four".