131726629 has 2 divisors, whose sum is σ = 131726630. Its totient is φ = 131726628.

The previous prime is 131726603. The next prime is 131726641. The reversal of 131726629 is 926627131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101969604 + 29757025 = 10098^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 131726629 - 2¹³ = 131718437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131726669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65863314 + 65863315.

It is an arithmetic number, because the mean of its divisors is an integer number (65863315).

Almost surely, 2^131726629 is an apocalyptic number.

It is an amenable number.

131726629 is a deficient number, since it is larger than the sum of its proper divisors (1).

131726629 is an equidigital number, since it uses as much as digits as its factorization.

131726629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 131726629 is about 11477.2221813468. Note that the first 3 decimals coincide. The cubic root of 131726629 is about 508.8126022126.

It can be divided in two parts, 131726 and 629, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 131726629 in words is "one hundred thirty-one million, seven hundred twenty-six thousand, six hundred twenty-nine".