131639071 has 2 divisors, whose sum is σ = 131639072. Its totient is φ = 131639070.

The previous prime is 131639059. The next prime is 131639117. The reversal of 131639071 is 170936131.

It is a weak prime.

It is an emirp because it is prime and its reverse (170936131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131639071 - 2¹⁵ = 131606303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131639021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65819535 + 65819536.

It is an arithmetic number, because the mean of its divisors is an integer number (65819536).

Almost surely, 2^131639071 is an apocalyptic number.

131639071 is a deficient number, since it is larger than the sum of its proper divisors (1).

131639071 is an equidigital number, since it uses as much as digits as its factorization.

131639071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 131639071 is about 11473.4071225595. The cubic root of 131639071 is about 508.6998422018.

The spelling of 131639071 in words is "one hundred thirty-one million, six hundred thirty-nine thousand, seventy-one".