131839447 has 2 divisors, whose sum is σ = 131839448. Its totient is φ = 131839446.

The previous prime is 131839439. The next prime is 131839493. The reversal of 131839447 is 744938131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131839447 - 2³ = 131839439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131839417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65919723 + 65919724.

It is an arithmetic number, because the mean of its divisors is an integer number (65919724).

Almost surely, 2^131839447 is an apocalyptic number.

131839447 is a deficient number, since it is larger than the sum of its proper divisors (1).

131839447 is an equidigital number, since it uses as much as digits as its factorization.

131839447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 131839447 is about 11482.1359946658. The cubic root of 131839447 is about 508.9578192190.

The spelling of 131839447 in words is "one hundred thirty-one million, eight hundred thirty-nine thousand, four hundred forty-seven".