121230203131323 has 72 divisors (see below), whose sum is σ = 206874137134080. Its totient is φ = 67814599394880.

The previous prime is 121230203131267. The next prime is 121230203131343. The reversal of 121230203131323 is 323131302032121.

121230203131323 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 3 + 0 + 20 + 313 + 1 + 323 = 666.

It is not a de Polignac number, because 121230203131323 - 2⁶ = 121230203131259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121230203131343) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 177124158 + ... + 177807276.

It is an arithmetic number, because the mean of its divisors is an integer number (2873251904640).

Almost surely, 2^{121230203131323} is an apocalyptic number.

121230203131323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121230203131323 is a deficient number, since it is larger than the sum of its proper divisors (85643934002757).

121230203131323 is a wasteful number, since it uses less digits than its factorization.

121230203131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693769 (or 693753 counting only the distinct ones).

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

Adding to 121230203131323 its reverse (323131302032121), we get a palindrome (444361505163444).

The spelling of 121230203131323 in words is "one hundred twenty-one trillion, two hundred thirty billion, two hundred three million, one hundred thirty-one thousand, three hundred twenty-three".