31321231102231 has 8 divisors (see below), whose sum is σ = 35824352180000. Its totient is φ = 26825274897408.

The previous prime is 31321231102211. The next prime is 31321231102339. The reversal of 31321231102231 is 13220113212313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31321231102231 - 2⁷ = 31321231102103 is a prime.

It is a super-2 number, since 2×31321231102231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321231102196 and 31321231102205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321231102211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1791208866 + ... + 1791226351.

It is an arithmetic number, because the mean of its divisors is an integer number (4478044022500).

Almost surely, 2^{31321231102231} is an apocalyptic number.

31321231102231 is a deficient number, since it is larger than the sum of its proper divisors (4503121077769).

31321231102231 is a wasteful number, since it uses less digits than its factorization.

31321231102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582436473.

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

Adding to 31321231102231 its reverse (13220113212313), we get a palindrome (44541344314544).

The spelling of 31321231102231 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, one hundred two thousand, two hundred thirty-one".