131530741 has 2 divisors, whose sum is σ = 131530742. Its totient is φ = 131530740.

The previous prime is 131530699. The next prime is 131530753. The reversal of 131530741 is 147035131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128482225 + 3048516 = 11335^2 + 1746^2 .

It is a cyclic number.

It is not a de Polignac number, because 131530741 - 2⁹ = 131530229 is a prime.

It is equal to p_7460107 and since 131530741 and 7460107 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131533741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65765370 + 65765371.

It is an arithmetic number, because the mean of its divisors is an integer number (65765371).

Almost surely, 2^131530741 is an apocalyptic number.

It is an amenable number.

131530741 is a deficient number, since it is larger than the sum of its proper divisors (1).

131530741 is an equidigital number, since it uses as much as digits as its factorization.

131530741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 131530741 is about 11468.6852341496. The cubic root of 131530741 is about 508.5602621187.

Adding to 131530741 its reverse (147035131), we get a palindrome (278565872).

The spelling of 131530741 in words is "one hundred thirty-one million, five hundred thirty thousand, seven hundred forty-one".