31304000224120 has 128 divisors (see below), whose sum is σ = 77579334282240. Its totient is φ = 11295907729920.

The previous prime is 31304000224099. The next prime is 31304000224127. The reversal of 31304000224120 is 2142200040313.

It is a junction number, because it is equal to n+sod(n) for n = 31304000224091 and 31304000224100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304000224127) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 15754855 + ... + 17630185.

It is an arithmetic number, because the mean of its divisors is an integer number (606088549080).

Almost surely, 2^{31304000224120} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31304000224120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38789667141120).

31304000224120 is an abundant number, since it is smaller than the sum of its proper divisors (46275334058120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31304000224120 is a wasteful number, since it uses less digits than its factorization.

31304000224120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876085 (or 1876081 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31304000224120 its reverse (2142200040313), we get a palindrome (33446200264433).

The spelling of 31304000224120 in words is "thirty-one trillion, three hundred four billion, two hundred twenty-four thousand, one hundred twenty".