127713731 has 2 divisors, whose sum is σ = 127713732. Its totient is φ = 127713730.

The previous prime is 127713683. The next prime is 127713739. The reversal of 127713731 is 137317721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127713731 - 2¹⁰ = 127712707 is a prime.

It is a super-2 number, since 2×127713731² = 32621594171880722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (127713739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63856865 + 63856866.

It is an arithmetic number, because the mean of its divisors is an integer number (63856866).

Almost surely, 2^127713731 is an apocalyptic number.

127713731 is a deficient number, since it is larger than the sum of its proper divisors (1).

127713731 is an equidigital number, since it uses as much as digits as its factorization.

127713731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6174, while the sum is 32.

The square root of 127713731 is about 11301.0499954650. The cubic root of 127713731 is about 503.5924350048.

The spelling of 127713731 in words is "one hundred twenty-seven million, seven hundred thirteen thousand, seven hundred thirty-one".