31400332002220 has 48 divisors (see below), whose sum is σ = 68447685817728. Its totient is φ = 12091373026560.

The previous prime is 31400332002181. The next prime is 31400332002227. The reversal of 31400332002220 is 2220023300413.

It is a junction number, because it is equal to n+sod(n) for n = 31400332002191 and 31400332002200.

It is not an unprimeable number, because it can be changed into a prime (31400332002227) 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 15 ways as a sum of consecutive naturals, for example, 273750927 + ... + 273865606.

It is an arithmetic number, because the mean of its divisors is an integer number (1425993454536).

Almost surely, 2^{31400332002220} is an apocalyptic number.

It is an amenable number.

31400332002220 is an abundant number, since it is smaller than the sum of its proper divisors (37047353815508).

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

31400332002220 is a wasteful number, since it uses less digits than its factorization.

31400332002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547616650 (or 547616648 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31400332002220 its reverse (2220023300413), we get a palindrome (33620355302633).

The spelling of 31400332002220 in words is "thirty-one trillion, four hundred billion, three hundred thirty-two million, two thousand, two hundred twenty".