31313230322121 has 24 divisors (see below), whose sum is σ = 50017978541856. Its totient is φ = 18717746639040.

The previous prime is 31313230322071. The next prime is 31313230322131. The reversal of 31313230322121 is 12122303231313.

31313230322121 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 323 + 0 + 322 + 12 + 1 = 666.

It is not a de Polignac number, because 31313230322121 - 2¹⁰ = 31313230321097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313230322131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2166398635 + ... + 2166413088.

It is an arithmetic number, because the mean of its divisors is an integer number (2084082439244).

Almost surely, 2^{31313230322121} is an apocalyptic number.

It is an amenable number.

31313230322121 is a deficient number, since it is larger than the sum of its proper divisors (18704748219735).

31313230322121 is a wasteful number, since it uses less digits than its factorization.

31313230322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332811813 (or 4332811810 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31313230322121 its reverse (12122303231313), we get a palindrome (43435533553434).

The spelling of 31313230322121 in words is "thirty-one trillion, three hundred thirteen billion, two hundred thirty million, three hundred twenty-two thousand, one hundred twenty-one".