131142241 has 4 divisors (see below), whose sum is σ = 132722352. Its totient is φ = 129562132.

The previous prime is 131142239. The next prime is 131142269. The reversal of 131142241 is 142241131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131142241 - 2¹ = 131142239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131142211) 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, 789931 + ... + 790096.

It is an arithmetic number, because the mean of its divisors is an integer number (33180588).

Almost surely, 2^131142241 is an apocalyptic number.

It is an amenable number.

131142241 is a deficient number, since it is larger than the sum of its proper divisors (1580111).

131142241 is an equidigital number, since it uses as much as digits as its factorization.

131142241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580110.

The product of its digits is 192, while the sum is 19.

The square root of 131142241 is about 11451.7352833533. The cubic root of 131142241 is about 508.0590598766.

Adding to 131142241 its reverse (142241131), we get a palindrome (273383372).

The spelling of 131142241 in words is "one hundred thirty-one million, one hundred forty-two thousand, two hundred forty-one".