131432123 has 4 divisors (see below), whose sum is σ = 134488728. Its totient is φ = 128375520.

The previous prime is 131432107. The next prime is 131432129. The reversal of 131432123 is 321234131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321234131 = 29 ⋅11077039.

It is a cyclic number.

It is not a de Polignac number, because 131432123 - 2⁴ = 131432107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131432095 and 131432104.

It is not an unprimeable number, because it can be changed into a prime (131432129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1528238 + ... + 1528323.

It is an arithmetic number, because the mean of its divisors is an integer number (33622182).

Almost surely, 2^131432123 is an apocalyptic number.

131432123 is a deficient number, since it is larger than the sum of its proper divisors (3056605).

131432123 is an equidigital number, since it uses as much as digits as its factorization.

131432123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056604.

The product of its digits is 432, while the sum is 20.

The square root of 131432123 is about 11464.3849813237. The cubic root of 131432123 is about 508.4331290109.

Adding to 131432123 its reverse (321234131), we get a palindrome (452666254).

The spelling of 131432123 in words is "one hundred thirty-one million, four hundred thirty-two thousand, one hundred twenty-three".