131121154235223 has 16 divisors (see below), whose sum is σ = 198771086525440. Its totient is φ = 85381216710552.

The previous prime is 131121154235177. The next prime is 131121154235249. The reversal of 131121154235223 is 322532451121131.

131121154235223 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 1 + 1 + 5 + 423 + 5 + 223 = 666.

It is not a de Polignac number, because 131121154235223 - 2²⁴ = 131121137458007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121154235273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56469057511 + ... + 56469059832.

It is an arithmetic number, because the mean of its divisors is an integer number (12423192907840).

Almost surely, 2^{131121154235223} is an apocalyptic number.

131121154235223 is a deficient number, since it is larger than the sum of its proper divisors (67649932290217).

131121154235223 is a wasteful number, since it uses less digits than its factorization.

131121154235223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112938117395 (or 112938117389 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 131121154235223 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, one hundred fifty-four million, two hundred thirty-five thousand, two hundred twenty-three".