133231133230123 has 12 divisors (see below), whose sum is σ = 137102068057080. Its totient is φ = 129444764578272.

The previous prime is 133231133230109. The next prime is 133231133230147. The reversal of 133231133230123 is 321032331132331.

It is a happy number.

It is not a de Polignac number, because 133231133230123 - 2⁹ = 133231133229611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133231133230103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202956333 + ... + 203611726.

It is an arithmetic number, because the mean of its divisors is an integer number (11425172338090).

Almost surely, 2^{133231133230123} is an apocalyptic number.

133231133230123 is a deficient number, since it is larger than the sum of its proper divisors (3870934826957).

133231133230123 is an frugal number, since it uses more digits than its factorization.

133231133230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406568266 (or 406568199 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 133231133230123 its reverse (321032331132331), we get a palindrome (454263464362454).

The spelling of 133231133230123 in words is "one hundred thirty-three trillion, two hundred thirty-one billion, one hundred thirty-three million, two hundred thirty thousand, one hundred twenty-three".