131836490309 has 2 divisors, whose sum is σ = 131836490310. Its totient is φ = 131836490308.

The previous prime is 131836490281. The next prime is 131836490333. The reversal of 131836490309 is 903094638131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128669277025 + 3167213284 = 358705^2 + 56278^2 .

It is a cyclic number.

It is not a de Polignac number, because 131836490309 - 2¹² = 131836486213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131836490209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65918245154 + 65918245155.

It is an arithmetic number, because the mean of its divisors is an integer number (65918245155).

Almost surely, 2^131836490309 is an apocalyptic number.

It is an amenable number.

131836490309 is a deficient number, since it is larger than the sum of its proper divisors (1).

131836490309 is an equidigital number, since it uses as much as digits as its factorization.

131836490309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 131836490309 in words is "one hundred thirty-one billion, eight hundred thirty-six million, four hundred ninety thousand, three hundred nine".