31231004424 has 16 divisors (see below), whose sum is σ = 78077511120. Its totient is φ = 10410334800.

The previous prime is 31231004417. The next prime is 31231004443. The reversal of 31231004424 is 42440013213.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1301291851 = 31231004424 / (3 + 1 + 2 + 3 + 1 + 0 + 0 + 4 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 31231004394 and 31231004403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650645902 + ... + 650645949.

It is an arithmetic number, because the mean of its divisors is an integer number (4879844445).

Almost surely, 2^31231004424 is an apocalyptic number.

It is an amenable number.

31231004424 is an abundant number, since it is smaller than the sum of its proper divisors (46846506696).

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

31231004424 is a wasteful number, since it uses less digits than its factorization.

31231004424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301291860 (or 1301291856 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31231004424 its reverse (42440013213), we get a palindrome (73671017637).

The spelling of 31231004424 in words is "thirty-one billion, two hundred thirty-one million, four thousand, four hundred twenty-four".