123231000133 has 16 divisors (see below), whose sum is σ = 128950174080. Its totient is φ = 117542424384.

The previous prime is 123231000091. The next prime is 123231000161. The reversal of 123231000133 is 331000132321.

It is a cyclic number.

It is not a de Polignac number, because 123231000133 - 2²¹ = 123228902981 is a prime.

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 123231000133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231000733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12806398 + ... + 12816016.

It is an arithmetic number, because the mean of its divisors is an integer number (8059385880).

Almost surely, 2^123231000133 is an apocalyptic number.

It is an amenable number.

123231000133 is a deficient number, since it is larger than the sum of its proper divisors (5719173947).

123231000133 is an equidigital number, since it uses as much as digits as its factorization.

123231000133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 123231000133 its reverse (331000132321), we get a palindrome (454231132454).

The spelling of 123231000133 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred thirty-three", and thus it is an aban number.