1431997 has 8 divisors (see below), whose sum is σ = 1648256. Its totient is φ = 1218672.

The previous prime is 1431977. The next prime is 1432001. The reversal of 1431997 is 7991341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1431997 - 2⁷ = 1431869 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 (1431907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448 + ... + 1750.

It is an arithmetic number, because the mean of its divisors is an integer number (206032).

2^1431997 is an apocalyptic number.

It is an amenable number.

1431997 is a deficient number, since it is larger than the sum of its proper divisors (216259).

1431997 is a wasteful number, since it uses less digits than its factorization.

1431997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467.

The product of its digits is 6804, while the sum is 34.

The square root of 1431997 is about 1196.6607706447. The cubic root of 1431997 is about 112.7147371794.

The spelling of 1431997 in words is "one million, four hundred thirty-one thousand, nine hundred ninety-seven".