31321121332102 has 48 divisors (see below), whose sum is σ = 55938519438912. Its totient is φ = 13107561642000.

The previous prime is 31321121332051. The next prime is 31321121332121. The reversal of 31321121332102 is 20123312112313.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 14331477 + ... + 16371727.

It is an arithmetic number, because the mean of its divisors is an integer number (1165385821644).

Almost surely, 2^{31321121332102} is an apocalyptic number.

31321121332102 is a deficient number, since it is larger than the sum of its proper divisors (24617398106810).

31321121332102 is a wasteful number, since it uses less digits than its factorization.

31321121332102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043953 (or 2043946 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31321121332102 its reverse (20123312112313), we get a palindrome (51444433444415).

The spelling of 31321121332102 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred two".