427706731 has 2 divisors, whose sum is σ = 427706732. Its totient is φ = 427706730.

The previous prime is 427706707. The next prime is 427706737. The reversal of 427706731 is 137607724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427706731 - 2⁷ = 427706603 is a prime.

It is a super-2 number, since 2×427706731² = 365866095485412722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427706737) 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, 213853365 + 213853366.

It is an arithmetic number, because the mean of its divisors is an integer number (213853366).

Almost surely, 2^427706731 is an apocalyptic number.

427706731 is a deficient number, since it is larger than the sum of its proper divisors (1).

427706731 is an equidigital number, since it uses as much as digits as its factorization.

427706731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 427706731 is about 20681.0718049138. The cubic root of 427706731 is about 753.4400379870.

The spelling of 427706731 in words is "four hundred twenty-seven million, seven hundred six thousand, seven hundred thirty-one".