23131121130135 has 32 divisors (see below), whose sum is σ = 41124323136960. Its totient is φ = 12335898931200.

The previous prime is 23131121130127. The next prime is 23131121130179. The reversal of 23131121130135 is 53103112113132.

23131121130135 is a `hidden beast` number, since 2 + 3 + 1 + 311 + 2 + 11 + 301 + 35 = 666.

It is not a de Polignac number, because 23131121130135 - 2³ = 23131121130127 is a prime.

It is a super-3 number, since 3×23131121130135³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23131121130099 and 23131121130108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2458426 + ... + 7232295.

It is an arithmetic number, because the mean of its divisors is an integer number (1285135098030).

Almost surely, 2^{23131121130135} is an apocalyptic number.

23131121130135 is a deficient number, since it is larger than the sum of its proper divisors (17993202006825).

23131121130135 is a wasteful number, since it uses less digits than its factorization.

23131121130135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9708416 (or 9708410 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 23131121130135 its reverse (53103112113132), we get a palindrome (76234233243267).

The spelling of 23131121130135 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty thousand, one hundred thirty-five".