31321223002132 has 48 divisors (see below), whose sum is σ = 62742027841920. Its totient is φ = 13402046472192.

The previous prime is 31321223002057. The next prime is 31321223002141. The reversal of 31321223002132 is 23120032212313.

It is a junction number, because it is equal to n+sod(n) for n = 31321223002097 and 31321223002106.

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 15 ways as a sum of consecutive naturals, for example, 193239588 + ... + 193401604.

It is an arithmetic number, because the mean of its divisors is an integer number (1307125580040).

Almost surely, 2^{31321223002132} is an apocalyptic number.

It is an amenable number.

31321223002132 is an abundant number, since it is smaller than the sum of its proper divisors (31420804839788).

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

31321223002132 is a wasteful number, since it uses less digits than its factorization.

31321223002132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172960 (or 172958 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31321223002132 its reverse (23120032212313), we get a palindrome (54441255214445).

The spelling of 31321223002132 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two thousand, one hundred thirty-two".