133423043131 has 4 divisors (see below), whose sum is σ = 152483477872. Its totient is φ = 114362608392.

The previous prime is 133423043119. The next prime is 133423043137. The reversal of 133423043131 is 131340324331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133423043131 - 2¹⁵ = 133423010363 is a prime.

It is a super-2 number, since 2×133423043131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133423043131.

It is not an unprimeable number, because it can be changed into a prime (133423043137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9530217360 + ... + 9530217373.

It is an arithmetic number, because the mean of its divisors is an integer number (38120869468).

Almost surely, 2^133423043131 is an apocalyptic number.

133423043131 is a deficient number, since it is larger than the sum of its proper divisors (19060434741).

133423043131 is an equidigital number, since it uses as much as digits as its factorization.

133423043131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19060434740.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 133423043131 its reverse (131340324331), we get a palindrome (264763367462).

The spelling of 133423043131 in words is "one hundred thirty-three billion, four hundred twenty-three million, forty-three thousand, one hundred thirty-one".