133031523123 has 10 divisors (see below), whose sum is σ = 198726102564. Its totient is φ = 88687682028.

The previous prime is 133031523089. The next prime is 133031523143. The reversal of 133031523123 is 321325130331.

133031523123 is a `hidden beast` number, since 1 + 3 + 30 + 315 + 2 + 312 + 3 = 666.

It is not a de Polignac number, because 133031523123 - 2⁸ = 133031522867 is a prime.

It is a super-2 number, since 2×133031523123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133031523143) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 821182161 + ... + 821182322.

Almost surely, 2^133031523123 is an apocalyptic number.

133031523123 is a deficient number, since it is larger than the sum of its proper divisors (65694579441).

133031523123 is an equidigital number, since it uses as much as digits as its factorization.

133031523123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642364495 (or 1642364486 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

Adding to 133031523123 its reverse (321325130331), we get a palindrome (454356653454).

The spelling of 133031523123 in words is "one hundred thirty-three billion, thirty-one million, five hundred twenty-three thousand, one hundred twenty-three".