1431057 has 4 divisors (see below), whose sum is σ = 1908080. Its totient is φ = 954036.

The previous prime is 1431047. The next prime is 1431071. The reversal of 1431057 is 7501341.

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 not a de Polignac number, because 1431057 - 2⁶ = 1430993 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238507 + ... + 238512.

It is an arithmetic number, because the mean of its divisors is an integer number (477020).

2^1431057 is an apocalyptic number.

It is an amenable number.

1431057 is a deficient number, since it is larger than the sum of its proper divisors (477023).

1431057 is an equidigital number, since it uses as much as digits as its factorization.

1431057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477022.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1431057 is about 1196.2679465738. The cubic root of 1431057 is about 112.6900688212.

Adding to 1431057 its reverse (7501341), we get a palindrome (8932398).

It can be divided in two parts, 143 and 1057, that multiplied together give a palindrome (151151).

The spelling of 1431057 in words is "one million, four hundred thirty-one thousand, fifty-seven".