123133011231 has 8 divisors (see below), whose sum is σ = 164894280880. Its totient is φ = 81730207872.

The previous prime is 123133011227. The next prime is 123133011259. The reversal of 123133011231 is 132110331321.

It is a happy number.

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

It is not a de Polignac number, because 123133011231 - 2² = 123133011227 is a prime.

It is a super-2 number, since 2×123133011231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123133011198 and 123133011207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123133011431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89615770 + ... + 89617143.

It is an arithmetic number, because the mean of its divisors is an integer number (20611785110).

Almost surely, 2^123133011231 is an apocalyptic number.

123133011231 is a deficient number, since it is larger than the sum of its proper divisors (41761269649).

123133011231 is a wasteful number, since it uses less digits than its factorization.

123133011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179233145.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 123133011231 its reverse (132110331321), we get a palindrome (255243342552).

The spelling of 123133011231 in words is "one hundred twenty-three billion, one hundred thirty-three million, eleven thousand, two hundred thirty-one".