23131134421145 has 8 divisors (see below), whose sum is σ = 27758410931400. Its totient is φ = 18504207786240.

The previous prime is 23131134421141. The next prime is 23131134421177. The reversal of 23131134421145 is 54112443113132.

It can be written as a sum of positive squares in 4 ways, for example, as 1926610624576 + 21204523796569 = 1388024^2 + 4604837^2 .

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

It is not a de Polignac number, because 23131134421145 - 2² = 23131134421141 is a prime.

It is a super-3 number, since 3×23131134421145³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (23131134421141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87323366 + ... + 87587855.

It is an arithmetic number, because the mean of its divisors is an integer number (3469801366425).

Almost surely, 2^{23131134421145} is an apocalyptic number.

It is an amenable number.

23131134421145 is a deficient number, since it is larger than the sum of its proper divisors (4627276510255).

23131134421145 is a wasteful number, since it uses less digits than its factorization.

23131134421145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174937675.

The product of its digits is 34560, while the sum is 35.

Adding to 23131134421145 its reverse (54112443113132), we get a palindrome (77243577534277).

The spelling of 23131134421145 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred thirty-four million, four hundred twenty-one thousand, one hundred forty-five".