121131100323 has 40 divisors (see below), whose sum is σ = 187032962160. Its totient is φ = 78083766720.

The previous prime is 121131100313. The next prime is 121131100333. The reversal of 121131100323 is 323001131121.

121131100323 is a `hidden beast` number, since 1 + 211 + 31 + 100 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (121131100313) and next prime (121131100333).

It is not a de Polignac number, because 121131100323 - 2¹⁴ = 121131083939 is a prime.

It is a super-3 number, since 3×121131100323³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121131100296 and 121131100305.

It is not an unprimeable number, because it can be changed into a prime (121131100313) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83761 + ... + 499277.

It is an arithmetic number, because the mean of its divisors is an integer number (4675824054).

Almost surely, 2^121131100323 is an apocalyptic number.

121131100323 is a deficient number, since it is larger than the sum of its proper divisors (65901861837).

121131100323 is an equidigital number, since it uses as much as digits as its factorization.

121131100323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415649 (or 415640 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121131100323 its reverse (323001131121), we get a palindrome (444132231444).

The spelling of 121131100323 in words is "one hundred twenty-one billion, one hundred thirty-one million, one hundred thousand, three hundred twenty-three".