31320102310121 has 4 divisors (see below), whose sum is σ = 31761230511744. Its totient is φ = 30878974108500.

The previous prime is 31320102310097. The next prime is 31320102310151. The reversal of 31320102310121 is 12101320102313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31320102310121 - 2³⁸ = 31045224403177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31320102310093 and 31320102310102.

It is not an unprimeable number, because it can be changed into a prime (31320102310151) 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, 220564100705 + ... + 220564100846.

It is an arithmetic number, because the mean of its divisors is an integer number (7940307627936).

Almost surely, 2^{31320102310121} is an apocalyptic number.

It is an amenable number.

31320102310121 is a deficient number, since it is larger than the sum of its proper divisors (441128201623).

31320102310121 is an equidigital number, since it uses as much as digits as its factorization.

31320102310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441128201622.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31320102310121 its reverse (12101320102313), we get a palindrome (43421422412434).

The spelling of 31320102310121 in words is "thirty-one trillion, three hundred twenty billion, one hundred two million, three hundred ten thousand, one hundred twenty-one".