31321311210121 has 8 divisors (see below), whose sum is σ = 31901123306880. Its totient is φ = 30746082608592.

The previous prime is 31321311210109. The next prime is 31321311210151. The reversal of 31321311210121 is 12101211312313.

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 31321311210121 - 2²⁷ = 31321176992393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321311210092 and 31321311210101.

It is not an unprimeable number, because it can be changed into a prime (31321311210151) 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, 1145860015 + ... + 1145887348.

It is an arithmetic number, because the mean of its divisors is an integer number (3987640413360).

Almost surely, 2^{31321311210121} is an apocalyptic number.

It is an amenable number.

31321311210121 is a deficient number, since it is larger than the sum of its proper divisors (579812096759).

31321311210121 is a wasteful number, since it uses less digits than its factorization.

31321311210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291747615.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 31321311210121 its reverse (12101211312313), we get a palindrome (43422522522434).

The spelling of 31321311210121 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred eleven million, two hundred ten thousand, one hundred twenty-one".