31002200102220 has 192 divisors, whose sum is σ = 90845596033920. Its totient is φ = 7891070533632.

The previous prime is 31002200102119. The next prime is 31002200102239. The reversal of 31002200102220 is 2220100220013.

It is a happy number.

It is a super-2 number, since 2×31002200102220² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 31002200102220.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1820544666 + ... + 1820561694.

It is an arithmetic number, because the mean of its divisors is an integer number (473154146010).

Almost surely, 2^{31002200102220} is an apocalyptic number.

31002200102220 is a gapful number since it is divisible by the number (30) 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 31002200102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45422798016960).

31002200102220 is an abundant number, since it is smaller than the sum of its proper divisors (59843395931700).

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

31002200102220 is a wasteful number, since it uses less digits than its factorization.

31002200102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32604 (or 32602 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 31002200102220 its reverse (2220100220013), we get a palindrome (33222300322233).

The spelling of 31002200102220 in words is "thirty-one trillion, two billion, two hundred million, one hundred two thousand, two hundred twenty".