31222330204224 has 224 divisors, whose sum is σ = 87623087233536. Its totient is φ = 9777938759680.

The previous prime is 31222330204193. The next prime is 31222330204391. The reversal of 31222330204224 is 42240203322213.

It is a junction number, because it is equal to n+sod(n) for n = 31222330204191 and 31222330204200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6401951674 + ... + 6401956550.

Almost surely, 2^{31222330204224} is an apocalyptic number.

31222330204224 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31222330204224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43811543616768).

31222330204224 is an abundant number, since it is smaller than the sum of its proper divisors (56400757029312).

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

31222330204224 is a wasteful number, since it uses less digits than its factorization.

31222330204224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973 (or 7963 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 31222330204224 its reverse (42240203322213), we get a palindrome (73462533526437).

The spelling of 31222330204224 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred thirty million, two hundred four thousand, two hundred twenty-four".