31321103310220 has 24 divisors (see below), whose sum is σ = 68042396847600. Its totient is φ = 12096426105792.

The previous prime is 31321103310199. The next prime is 31321103310241. The reversal of 31321103310220 is 2201330112313.

It is an interprime number because it is at equal distance from previous prime (31321103310199) and next prime (31321103310241).

It is a junction number, because it is equal to n+sod(n) for n = 31321103310191 and 31321103310200.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27000950550 + ... + 27000951709.

It is an arithmetic number, because the mean of its divisors is an integer number (2835099868650).

Almost surely, 2^{31321103310220} is an apocalyptic number.

It is an amenable number.

31321103310220 is an abundant number, since it is smaller than the sum of its proper divisors (36721293537380).

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

31321103310220 is a wasteful number, since it uses less digits than its factorization.

31321103310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54001902297 (or 54001902295 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31321103310220 its reverse (2201330112313), we get a palindrome (33522433422533).

The spelling of 31321103310220 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred three million, three hundred ten thousand, two hundred twenty".