131742131 has 4 divisors (see below), whose sum is σ = 131994552. Its totient is φ = 131489712.

The previous prime is 131742109. The next prime is 131742173. The reversal of 131742131 is 131247131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131247131 = 23 ⋅5706397.

It is a cyclic number.

It is not a de Polignac number, because 131742131 - 2¹⁰ = 131741107 is a prime.

It is a super-2 number, since 2×131742131² = 34711978160842322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131742097 and 131742106.

It is not an unprimeable number, because it can be changed into a prime (131742731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125426 + ... + 126471.

It is an arithmetic number, because the mean of its divisors is an integer number (32998638).

Almost surely, 2^131742131 is an apocalyptic number.

131742131 is a deficient number, since it is larger than the sum of its proper divisors (252421).

131742131 is an equidigital number, since it uses as much as digits as its factorization.

131742131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252420.

The product of its digits is 504, while the sum is 23.

The square root of 131742131 is about 11477.8974991067. The cubic root of 131742131 is about 508.8325609803.

Adding to 131742131 its reverse (131247131), we get a palindrome (262989262).

The spelling of 131742131 in words is "one hundred thirty-one million, seven hundred forty-two thousand, one hundred thirty-one".