23131121130133 has 4 divisors (see below), whose sum is σ = 23232130392940. Its totient is φ = 23030111867328.

The previous prime is 23131121130127. The next prime is 23131121130179. The reversal of 23131121130133 is 33103112113132.

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 22524876697444 + 606244432689 = 4746038^2 + 778617^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131121130133 - 2⁵ = 23131121130101 is a prime.

It is a super-3 number, since 3×23131121130133³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131121130098 and 23131121130107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131121131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50504631060 + ... + 50504631517.

It is an arithmetic number, because the mean of its divisors is an integer number (5808032598235).

Almost surely, 2^{23131121130133} is an apocalyptic number.

It is an amenable number.

23131121130133 is a deficient number, since it is larger than the sum of its proper divisors (101009262807).

23131121130133 is a wasteful number, since it uses less digits than its factorization.

23131121130133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101009262806.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 23131121130133 its reverse (33103112113132), we get a palindrome (56234233243265).

The spelling of 23131121130133 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty thousand, one hundred thirty-three".