31321223101023 has 4 divisors (see below), whose sum is σ = 41761630801368. Its totient is φ = 20880815400680.

The previous prime is 31321223100983. The next prime is 31321223101031. The reversal of 31321223101023 is 32010132212313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31321223101023 - 2¹⁸ = 31321222838879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31321223100984 and 31321223101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321223101033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220203850168 + ... + 5220203850173.

It is an arithmetic number, because the mean of its divisors is an integer number (10440407700342).

Almost surely, 2^{31321223101023} is an apocalyptic number.

31321223101023 is a deficient number, since it is larger than the sum of its proper divisors (10440407700345).

31321223101023 is a wasteful number, since it uses less digits than its factorization.

31321223101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440407700344.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31321223101023 its reverse (32010132212313), we get a palindrome (63331355313336).

The spelling of 31321223101023 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, one hundred one thousand, twenty-three".