123133131011 has 8 divisors (see below), whose sum is σ = 135657024048. Its totient is φ = 110830900000.

The previous prime is 123133130959. The next prime is 123133131013. The reversal of 123133131011 is 110131331321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123133131011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123133131013) 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 7 ways as a sum of consecutive naturals, for example, 55414340 + ... + 55416561.

It is an arithmetic number, because the mean of its divisors is an integer number (16957128006).

Almost surely, 2^123133131011 is an apocalyptic number.

123133131011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123133131011 is a deficient number, since it is larger than the sum of its proper divisors (12523893037).

123133131011 is a wasteful number, since it uses less digits than its factorization.

123133131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110831013.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 123133131011 its reverse (110131331321), we get a palindrome (233264462332).

It can be divided in two parts, 1231331310 and 11, that added together give a palindrome (1231331321).

The spelling of 123133131011 in words is "one hundred twenty-three billion, one hundred thirty-three million, one hundred thirty-one thousand, eleven".