31301130222 has 36 divisors (see below), whose sum is σ = 70238380680. Its totient is φ = 10073922096.

The previous prime is 31301130209. The next prime is 31301130227. The reversal of 31301130222 is 22203110313.

31301130222 is a `hidden beast` number, since 313 + 0 + 1 + 130 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31301130195 and 31301130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301130227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1018722 + ... + 1048997.

It is an arithmetic number, because the mean of its divisors is an integer number (1951066130).

Almost surely, 2^31301130222 is an apocalyptic number.

31301130222 is an abundant number, since it is smaller than the sum of its proper divisors (38937250458).

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

31301130222 is a wasteful number, since it uses less digits than its factorization.

31301130222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067785 (or 2067753 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31301130222 its reverse (22203110313), we get a palindrome (53504240535).

The spelling of 31301130222 in words is "thirty-one billion, three hundred one million, one hundred thirty thousand, two hundred twenty-two".