31320100324121 has 16 divisors (see below), whose sum is σ = 36133778308224. Its totient is φ = 26591564369664.

The previous prime is 31320100324067. The next prime is 31320100324171. The reversal of 31320100324121 is 12142300102313.

It is a de Polignac number, because none of the positive numbers 2^k-31320100324121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320100324171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11133635 + ... + 13660088.

It is an arithmetic number, because the mean of its divisors is an integer number (2258361144264).

Almost surely, 2^{31320100324121} is an apocalyptic number.

It is an amenable number.

31320100324121 is a deficient number, since it is larger than the sum of its proper divisors (4813677984103).

31320100324121 is a wasteful number, since it uses less digits than its factorization.

31320100324121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24795440.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31320100324121 its reverse (12142300102313), we get a palindrome (43462400426434).

The spelling of 31320100324121 in words is "thirty-one trillion, three hundred twenty billion, one hundred million, three hundred twenty-four thousand, one hundred twenty-one".