123133213131 has 8 divisors (see below), whose sum is σ = 164209949904. Its totient is φ = 82072642560.

The previous prime is 123133213129. The next prime is 123133213157. The reversal of 123133213131 is 131312331321.

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

It is not a de Polignac number, because 123133213131 - 2¹ = 123133213129 is a prime.

It is a super-2 number, since 2×123133213131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123133213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4023766 + ... + 4054251.

It is an arithmetic number, because the mean of its divisors is an integer number (20526243738).

Almost surely, 2^123133213131 is an apocalyptic number.

123133213131 is a deficient number, since it is larger than the sum of its proper divisors (41076736773).

123133213131 is an equidigital number, since it uses as much as digits as its factorization.

123133213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083101.

The product of its digits is 972, while the sum is 24.

Adding to 123133213131 its reverse (131312331321), we get a palindrome (254445544452).

The spelling of 123133213131 in words is "one hundred twenty-three billion, one hundred thirty-three million, two hundred thirteen thousand, one hundred thirty-one".