1423131999 has 32 divisors (see below), whose sum is σ = 2111535360. Its totient is φ = 848558592.

The previous prime is 1423131989. The next prime is 1423132001. The reversal of 1423131999 is 9991313241.

It is not a de Polignac number, because 1423131999 - 2¹² = 1423127903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1423131999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423131949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72372 + ... + 89910.

It is an arithmetic number, because the mean of its divisors is an integer number (65985480).

Almost surely, 2^1423131999 is an apocalyptic number.

1423131999 is a deficient number, since it is larger than the sum of its proper divisors (688403361).

1423131999 is a wasteful number, since it uses less digits than its factorization.

1423131999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17639.

The product of its digits is 52488, while the sum is 42.

The square root of 1423131999 is about 37724.4217848332. The cubic root of 1423131999 is about 1124.8166282854.

The spelling of 1423131999 in words is "one billion, four hundred twenty-three million, one hundred thirty-one thousand, nine hundred ninety-nine".