31321022102 has 16 divisors (see below), whose sum is σ = 47152171872. Its totient is φ = 15603673920.

The previous prime is 31321022099. The next prime is 31321022123. The reversal of 31321022102 is 20122012313.

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 7 ways as a sum of consecutive naturals, for example, 1718228 + ... + 1736360.

It is an arithmetic number, because the mean of its divisors is an integer number (2947010742).

Almost surely, 2^31321022102 is an apocalyptic number.

31321022102 is a deficient number, since it is larger than the sum of its proper divisors (15831149770).

31321022102 is a wasteful number, since it uses less digits than its factorization.

31321022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21223.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31321022102 its reverse (20122012313), we get a palindrome (51443034415).

The spelling of 31321022102 in words is "thirty-one billion, three hundred twenty-one million, twenty-two thousand, one hundred two".