23131531244135 has 16 divisors (see below), whose sum is σ = 28964928148416. Its totient is φ = 17700510567168.

The previous prime is 23131531244119. The next prime is 23131531244299. The reversal of 23131531244135 is 53144213513132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23131531244135 - 2⁴ = 23131531244119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15282737 + ... + 16727973.

It is an arithmetic number, because the mean of its divisors is an integer number (1810308009276).

Almost surely, 2^{23131531244135} is an apocalyptic number.

23131531244135 is a deficient number, since it is larger than the sum of its proper divisors (5833396904281).

23131531244135 is a wasteful number, since it uses less digits than its factorization.

23131531244135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584442.

The product of its digits is 129600, while the sum is 38.

Adding to 23131531244135 its reverse (53144213513132), we get a palindrome (76275744757267).

The spelling of 23131531244135 in words is "twenty-three trillion, one hundred thirty-one billion, five hundred thirty-one million, two hundred forty-four thousand, one hundred thirty-five".