31341024220 has 96 divisors (see below), whose sum is σ = 76076231616. Its totient is φ = 10718822400.

The previous prime is 31341024199. The next prime is 31341024251. The reversal of 31341024220 is 2242014313.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31341024191 and 31341024200.

It is a congruent number.

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, 9127624 + ... + 9131056.

It is an arithmetic number, because the mean of its divisors is an integer number (792460746).

Almost surely, 2^31341024220 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 31341024220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38038115808).

31341024220 is an abundant number, since it is smaller than the sum of its proper divisors (44735207396).

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

31341024220 is a wasteful number, since it uses less digits than its factorization.

31341024220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911 (or 5909 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31341024220 its reverse (2242014313), we get a palindrome (33583038533).

The spelling of 31341024220 in words is "thirty-one billion, three hundred forty-one million, twenty-four thousand, two hundred twenty".