31320002022 has 32 divisors (see below), whose sum is σ = 62908545024. Its totient is φ = 10395316800.

The previous prime is 31320002009. The next prime is 31320002069. The reversal of 31320002022 is 22020002313.

It is a junction number, because it is equal to n+sod(n) for n = 31320001992 and 31320002010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840738 + ... + 1857674.

It is an arithmetic number, because the mean of its divisors is an integer number (1965892032).

Almost surely, 2^31320002022 is an apocalyptic number.

31320002022 is an abundant number, since it is smaller than the sum of its proper divisors (31588543002).

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

31320002022 is a wasteful number, since it uses less digits than its factorization.

31320002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18244.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 31320002022 its reverse (22020002313), we get a palindrome (53340004335).

The spelling of 31320002022 in words is "thirty-one billion, three hundred twenty million, two thousand, twenty-two".