427731197 has 4 divisors (see below), whose sum is σ = 429880800. Its totient is φ = 425581596.

The previous prime is 427731131. The next prime is 427731209. The reversal of 427731197 is 791137724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427731197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427731107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074503 + ... + 1074900.

It is an arithmetic number, because the mean of its divisors is an integer number (107470200).

Almost surely, 2^427731197 is an apocalyptic number.

It is an amenable number.

427731197 is a deficient number, since it is larger than the sum of its proper divisors (2149603).

427731197 is a wasteful number, since it uses less digits than its factorization.

427731197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149602.

The product of its digits is 74088, while the sum is 41.

The square root of 427731197 is about 20681.6633035160. The cubic root of 427731197 is about 753.4544039931.

The spelling of 427731197 in words is "four hundred twenty-seven million, seven hundred thirty-one thousand, one hundred ninety-seven".