131641331 has 4 divisors (see below), whose sum is σ = 133872600. Its totient is φ = 129410064.

The previous prime is 131641327. The next prime is 131641333. The reversal of 131641331 is 133146131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133146131 = 313 ⋅425387.

It is a cyclic number.

It is not a de Polignac number, because 131641331 - 2² = 131641327 is a prime.

It is a super-2 number, since 2×131641331² = 34658880054903122, 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 = 131641297 and 131641306.

It is not an unprimeable number, because it can be changed into a prime (131641333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115546 + ... + 1115663.

It is an arithmetic number, because the mean of its divisors is an integer number (33468150).

Almost surely, 2^131641331 is an apocalyptic number.

131641331 is a deficient number, since it is larger than the sum of its proper divisors (2231269).

131641331 is an equidigital number, since it uses as much as digits as its factorization.

131641331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231268.

The product of its digits is 648, while the sum is 23.

The square root of 131641331 is about 11473.5056107538. The cubic root of 131641331 is about 508.7027533311.

Adding to 131641331 its reverse (133146131), we get a palindrome (264787462).

The spelling of 131641331 in words is "one hundred thirty-one million, six hundred forty-one thousand, three hundred thirty-one".