123113133 has 72 divisors (see below), whose sum is σ = 222602016. Its totient is φ = 64627200.

The previous prime is 123113131. The next prime is 123113147. The reversal of 123113133 is 331311321.

It is a happy number.

It is not a de Polignac number, because 123113133 - 2¹ = 123113131 is a prime.

It is a super-3 number, since 3×123113133³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123113131) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 371778 + ... + 372108.

Almost surely, 2^123113133 is an apocalyptic number.

123113133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123113133 is a deficient number, since it is larger than the sum of its proper divisors (99488883).

123113133 is a wasteful number, since it uses less digits than its factorization.

123113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 375 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 123113133 is about 11095.6357636685. The cubic root of 123113133 is about 497.4714113687.

Adding to 123113133 its reverse (331311321), we get a palindrome (454424454).

The spelling of 123113133 in words is "one hundred twenty-three million, one hundred thirteen thousand, one hundred thirty-three".