1431131999 has 16 divisors (see below), whose sum is σ = 1600805376. Its totient is φ = 1268275200.

The previous prime is 1431131953. The next prime is 1431132011. The reversal of 1431131999 is 9991311341.

It is a cyclic number.

It is not a de Polignac number, because 1431131999 - 2²⁸ = 1162696543 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 (1431131909) 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 15 ways as a sum of consecutive naturals, for example, 127484 + ... + 138254.

It is an arithmetic number, because the mean of its divisors is an integer number (100050336).

Almost surely, 2^1431131999 is an apocalyptic number.

1431131999 is a deficient number, since it is larger than the sum of its proper divisors (169673377).

1431131999 is a wasteful number, since it uses less digits than its factorization.

1431131999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11086.

The product of its digits is 26244, while the sum is 41.

The square root of 1431131999 is about 37830.3052987945. The cubic root of 1431131999 is about 1126.9203741153.

The spelling of 1431131999 in words is "one billion, four hundred thirty-one million, one hundred thirty-one thousand, nine hundred ninety-nine".