31321220022102 has 16 divisors (see below), whose sum is σ = 65366024394240. Its totient is φ = 9986475949032.

The previous prime is 31321220022073. The next prime is 31321220022121. The reversal of 31321220022102 is 20122002212313.

It is a congruent number.

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, 113482681102 + ... + 113482681377.

It is an arithmetic number, because the mean of its divisors is an integer number (4085376524640).

Almost surely, 2^{31321220022102} is an apocalyptic number.

31321220022102 is an abundant number, since it is smaller than the sum of its proper divisors (34044804372138).

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

31321220022102 is a wasteful number, since it uses less digits than its factorization.

31321220022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226965362507.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31321220022102 its reverse (20122002212313), we get a palindrome (51443222234415).

The spelling of 31321220022102 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred two".