13231023133 has 4 divisors (see below), whose sum is σ = 13687265340. Its totient is φ = 12774780928.

The previous prime is 13231023101. The next prime is 13231023139. The reversal of 13231023133 is 33132013231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4435959609 + 8795063524 = 66603^2 + 93782^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231023133 - 2⁵ = 13231023101 is a prime.

It is a super-2 number, since 2×13231023133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231023139) 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, 228121060 + ... + 228121117.

It is an arithmetic number, because the mean of its divisors is an integer number (3421816335).

Almost surely, 2^13231023133 is an apocalyptic number.

It is an amenable number.

13231023133 is a deficient number, since it is larger than the sum of its proper divisors (456242207).

13231023133 is an equidigital number, since it uses as much as digits as its factorization.

13231023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456242206.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 13231023133 its reverse (33132013231), we get a palindrome (46363036364).

The spelling of 13231023133 in words is "thirteen billion, two hundred thirty-one million, twenty-three thousand, one hundred thirty-three".