131121042423 has 8 divisors (see below), whose sum is σ = 199803493248. Its totient is φ = 74926309944.

The previous prime is 131121042407. The next prime is 131121042433. The reversal of 131121042423 is 324240121131.

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

It is not a de Polignac number, because 131121042423 - 2⁴ = 131121042407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131121042393 and 131121042402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121042433) 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 7 ways as a sum of consecutive naturals, for example, 3121929561 + ... + 3121929602.

It is an arithmetic number, because the mean of its divisors is an integer number (24975436656).

Almost surely, 2^131121042423 is an apocalyptic number.

131121042423 is a deficient number, since it is larger than the sum of its proper divisors (68682450825).

131121042423 is an equidigital number, since it uses as much as digits as its factorization.

131121042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6243859173.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131121042423 its reverse (324240121131), we get a palindrome (455361163554).

The spelling of 131121042423 in words is "one hundred thirty-one billion, one hundred twenty-one million, forty-two thousand, four hundred twenty-three".