31022330101220 has 24 divisors (see below), whose sum is σ = 65150679564600. Its totient is φ = 12408210830592.

The previous prime is 31022330101177. The next prime is 31022330101241. The reversal of 31022330101220 is 2210103322013.

It can be written as a sum of positive squares in 4 ways, for example, as 6044645119396 + 24977684981824 = 2458586^2 + 4997768^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31022330101192 and 31022330101201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44722835 + ... + 45411194.

It is an arithmetic number, because the mean of its divisors is an integer number (2714611648525).

Almost surely, 2^{31022330101220} is an apocalyptic number.

It is an amenable number.

31022330101220 is an abundant number, since it is smaller than the sum of its proper divisors (34128349463380).

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

31022330101220 is a wasteful number, since it uses less digits than its factorization.

31022330101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90151247 (or 90151245 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31022330101220 its reverse (2210103322013), we get a palindrome (33232433423233).

The spelling of 31022330101220 in words is "thirty-one trillion, twenty-two billion, three hundred thirty million, one hundred one thousand, two hundred twenty".