131923 has 8 divisors (see below), whose sum is σ = 146880. Its totient is φ = 117480.

The previous prime is 131909. The next prime is 131927. The reversal of 131923 is 329131.

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

It is not a de Polignac number, because 131923 - 2⁵ = 131891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131923.

It is not an unprimeable number, because it can be changed into a prime (131927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648 + ... + 826.

It is an arithmetic number, because the mean of its divisors is an integer number (18360).

2¹³¹⁹²³ is an apocalyptic number.

131923 is a deficient number, since it is larger than the sum of its proper divisors (14957).

131923 is a wasteful number, since it uses less digits than its factorization.

131923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 162, while the sum is 19.

The square root of 131923 is about 363.2120592712. The cubic root of 131923 is about 50.9065313532.

It can be divided in two parts, 13 and 1923, that added together give a square (1936 = 44²).

The spelling of 131923 in words is "one hundred thirty-one thousand, nine hundred twenty-three".