427271731 has 4 divisors (see below), whose sum is σ = 427329000. Its totient is φ = 427214464.

The previous prime is 427271723. The next prime is 427271749. The reversal of 427271731 is 137172724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427271731 - 2³ = 427271723 is a prime.

It is a super-2 number, since 2×427271731² = 365122264223472722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427271771) 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 in 3 ways as a sum of consecutive naturals, for example, 15406 + ... + 33043.

It is an arithmetic number, because the mean of its divisors is an integer number (106832250).

Almost surely, 2^427271731 is an apocalyptic number.

427271731 is a deficient number, since it is larger than the sum of its proper divisors (57269).

427271731 is an equidigital number, since it uses as much as digits as its factorization.

427271731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57268.

The product of its digits is 16464, while the sum is 34.

The square root of 427271731 is about 20670.5522664490. The cubic root of 427271731 is about 753.1845221025.

The spelling of 427271731 in words is "four hundred twenty-seven million, two hundred seventy-one thousand, seven hundred thirty-one".