31331200120121 has 8 divisors (see below), whose sum is σ = 34249674805824. Its totient is φ = 28424422728720.

The previous prime is 31331200120109. The next prime is 31331200120123. The reversal of 31331200120121 is 12102100213313.

It is a happy number.

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 31331200120121 - 2¹⁰ = 31331200119097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31331200120093 and 31331200120102.

It is not an unprimeable number, because it can be changed into a prime (31331200120123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2924317970 + ... + 2924328683.

It is an arithmetic number, because the mean of its divisors is an integer number (4281209350728).

Almost surely, 2^{31331200120121} is an apocalyptic number.

It is an amenable number.

31331200120121 is a deficient number, since it is larger than the sum of its proper divisors (2918474685703).

31331200120121 is a wasteful number, since it uses less digits than its factorization.

31331200120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848647151.

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

Adding to 31331200120121 its reverse (12102100213313), we get a palindrome (43433300333434).

The spelling of 31331200120121 in words is "thirty-one trillion, three hundred thirty-one billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".