131123121132987 has 24 divisors (see below), whose sum is σ = 191020795213248. Its totient is φ = 86668607516400.

The previous prime is 131123121132919. The next prime is 131123121133007. The reversal of 131123121132987 is 789231121321131.

It is a happy number.

131123121132987 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 31 + 211 + 329 + 87 = 666.

It is not a de Polignac number, because 131123121132987 - 2²² = 131123116938683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131123121131987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49683253 + ... + 52255830.

It is an arithmetic number, because the mean of its divisors is an integer number (7959199800552).

Almost surely, 2^{131123121132987} is an apocalyptic number.

131123121132987 is a deficient number, since it is larger than the sum of its proper divisors (59897674080261).

131123121132987 is a wasteful number, since it uses less digits than its factorization.

131123121132987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101940311 (or 101940308 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The spelling of 131123121132987 in words is "one hundred thirty-one trillion, one hundred twenty-three billion, one hundred twenty-one million, one hundred thirty-two thousand, nine hundred eighty-seven".