30231310121 has 4 divisors (see below), whose sum is σ = 30508661700. Its totient is φ = 29953958544.

The previous prime is 30231310093. The next prime is 30231310129. The reversal of 30231310121 is 12101313203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21627820096 + 8603490025 = 147064^2 + 92755^2 .

It is a cyclic number.

It is not a de Polignac number, because 30231310121 - 2²⁶ = 30164201257 is a prime.

It is a super-2 number, since 2×30231310121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30231310121.

It is not an unprimeable number, because it can be changed into a prime (30231310129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138675626 + ... + 138675843.

It is an arithmetic number, because the mean of its divisors is an integer number (7627165425).

Almost surely, 2^30231310121 is an apocalyptic number.

It is an amenable number.

30231310121 is a deficient number, since it is larger than the sum of its proper divisors (277351579).

30231310121 is a wasteful number, since it uses less digits than its factorization.

30231310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277351578.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30231310121 its reverse (12101313203), we get a palindrome (42332623324).

The spelling of 30231310121 in words is "thirty billion, two hundred thirty-one million, three hundred ten thousand, one hundred twenty-one".