131738947 has 2 divisors, whose sum is σ = 131738948. Its totient is φ = 131738946.

The previous prime is 131738923. The next prime is 131738969. The reversal of 131738947 is 749837131.

It is a strong prime.

It is an emirp because it is prime and its reverse (749837131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131738947 - 2⁷ = 131738819 is a prime.

It is not a weakly prime, because it can be changed into another prime (131738977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65869473 + 65869474.

It is an arithmetic number, because the mean of its divisors is an integer number (65869474).

Almost surely, 2^131738947 is an apocalyptic number.

131738947 is a deficient number, since it is larger than the sum of its proper divisors (1).

131738947 is an equidigital number, since it uses as much as digits as its factorization.

131738947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 131738947 is about 11477.7587969080. The cubic root of 131738947 is about 508.8284617198.

The spelling of 131738947 in words is "one hundred thirty-one million, seven hundred thirty-eight thousand, nine hundred forty-seven".