31330130121 has 24 divisors (see below), whose sum is σ = 45391632000. Its totient is φ = 20823599232.

The previous prime is 31330130107. The next prime is 31330130177. The reversal of 31330130121 is 12103103313.

It is a happy number.

31330130121 is a `hidden beast` number, since 31 + 330 + 1 + 301 + 2 + 1 = 666.

It is not a de Polignac number, because 31330130121 - 2⁷ = 31330129993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31330130094 and 31330130103.

It is not an unprimeable number, because it can be changed into a prime (31330130521) 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, 8054145 + ... + 8058033.

It is an arithmetic number, because the mean of its divisors is an integer number (1891318000).

Almost surely, 2^31330130121 is an apocalyptic number.

It is an amenable number.

31330130121 is a deficient number, since it is larger than the sum of its proper divisors (14061501879).

31330130121 is a wasteful number, since it uses less digits than its factorization.

31330130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373 (or 6370 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31330130121 its reverse (12103103313), we get a palindrome (43433233434).

The spelling of 31330130121 in words is "thirty-one billion, three hundred thirty million, one hundred thirty thousand, one hundred twenty-one".