1431601 has 2 divisors, whose sum is σ = 1431602. Its totient is φ = 1431600.

The previous prime is 1431581. The next prime is 1431607. The reversal of 1431601 is 1061341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767376 + 664225 = 876^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431601 - 2⁵ = 1431569 is a prime.

It is equal to p₁₀₉₃₂₁ and since 1431601 and 109321 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1431607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715800 + 715801.

It is an arithmetic number, because the mean of its divisors is an integer number (715801).

2^1431601 is an apocalyptic number.

It is an amenable number.

1431601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431601 is an equidigital number, since it uses as much as digits as its factorization.

1431601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1431601 is about 1196.4952987789. The cubic root of 1431601 is about 112.7043462938.

Adding to 1431601 its reverse (1061341), we get a palindrome (2492942).

The spelling of 1431601 in words is "one million, four hundred thirty-one thousand, six hundred one".