1431494287 has 2 divisors, whose sum is σ = 1431494288. Its totient is φ = 1431494286.

The previous prime is 1431494279. The next prime is 1431494293. The reversal of 1431494287 is 7824941341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1431494287 - 2³ = 1431494279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431494587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715747143 + 715747144.

It is an arithmetic number, because the mean of its divisors is an integer number (715747144).

Almost surely, 2^1431494287 is an apocalyptic number.

1431494287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431494287 is an equidigital number, since it uses as much as digits as its factorization.

1431494287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 1431494287 is about 37835.0933261701. The cubic root of 1431494287 is about 1127.0154585852.

The spelling of 1431494287 in words is "one billion, four hundred thirty-one million, four hundred ninety-four thousand, two hundred eighty-seven".