31004424200 has 192 divisors, whose sum is σ = 78680678400. Its totient is φ = 11323065600.

The previous prime is 31004424193. The next prime is 31004424221. The reversal of 31004424200 is 242440013.

It is a super-2 number, since 2×31004424200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11964905 + ... + 11967495.

It is an arithmetic number, because the mean of its divisors is an integer number (409795200).

Almost surely, 2^31004424200 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 31004424200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39340339200).

31004424200 is an abundant number, since it is smaller than the sum of its proper divisors (47676254200).

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

31004424200 is a wasteful number, since it uses less digits than its factorization.

31004424200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740 (or 2731 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 31004424200 its reverse (242440013), we get a palindrome (31246864213).

The spelling of 31004424200 in words is "thirty-one billion, four million, four hundred twenty-four thousand, two hundred".