123132231011 has 4 divisors (see below), whose sum is σ = 123208759800. Its totient is φ = 123055702224.

The previous prime is 123132231007. The next prime is 123132231037. The reversal of 123132231011 is 110132231321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123132231011 - 2² = 123132231007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123132231811) 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, 38261981 + ... + 38265198.

It is an arithmetic number, because the mean of its divisors is an integer number (30802189950).

Almost surely, 2^123132231011 is an apocalyptic number.

123132231011 is a deficient number, since it is larger than the sum of its proper divisors (76528789).

123132231011 is an equidigital number, since it uses as much as digits as its factorization.

123132231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76528788.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123132231011 its reverse (110132231321), we get a palindrome (233264462332).

The spelling of 123132231011 in words is "one hundred twenty-three billion, one hundred thirty-two million, two hundred thirty-one thousand, eleven".