131142329 has 2 divisors, whose sum is σ = 131142330. Its totient is φ = 131142328.

The previous prime is 131142311. The next prime is 131142331. The reversal of 131142329 is 923241131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88266025 + 42876304 = 9395^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 131142329 - 2²⁰ = 130093753 is a prime.

Together with 131142331, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131142298 and 131142307.

It is not a weakly prime, because it can be changed into another prime (131142629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65571164 + 65571165.

It is an arithmetic number, because the mean of its divisors is an integer number (65571165).

Almost surely, 2^131142329 is an apocalyptic number.

It is an amenable number.

131142329 is a deficient number, since it is larger than the sum of its proper divisors (1).

131142329 is an equidigital number, since it uses as much as digits as its factorization.

131142329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 131142329 is about 11451.7391255652. The cubic root of 131142329 is about 508.0591735170.

The spelling of 131142329 in words is "one hundred thirty-one million, one hundred forty-two thousand, three hundred twenty-nine".