31321223002134 has 144 divisors (see below), whose sum is σ = 73706598416880. Its totient is φ = 9608179875840.

The previous prime is 31321223002057. The next prime is 31321223002141. The reversal of 31321223002134 is 43120032212313.

31321223002134 is a `hidden beast` number, since 3 + 1 + 3 + 212 + 230 + 0 + 213 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31321223002098 and 31321223002107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5756516854 + ... + 5756522294.

It is an arithmetic number, because the mean of its divisors is an integer number (511851377895).

Almost surely, 2^{31321223002134} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31321223002134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36853299208440).

31321223002134 is an abundant number, since it is smaller than the sum of its proper divisors (42385375414746).

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

31321223002134 is a wasteful number, since it uses less digits than its factorization.

31321223002134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10847 (or 10831 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31321223002134 its reverse (43120032212313), we get a palindrome (74441255214447).

The spelling of 31321223002134 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two thousand, one hundred thirty-four".