1431321099 has 8 divisors (see below), whose sum is σ = 2055230352. Its totient is φ = 880812960.

The previous prime is 1431321079. The next prime is 1431321109. The reversal of 1431321099 is 9901231341.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1431321099 - 2¹¹ = 1431319051 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1431321079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18350232 + ... + 18350309.

It is an arithmetic number, because the mean of its divisors is an integer number (256903794).

Almost surely, 2^1431321099 is an apocalyptic number.

1431321099 is a deficient number, since it is larger than the sum of its proper divisors (623909253).

1431321099 is a wasteful number, since it uses less digits than its factorization.

1431321099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36700557.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1431321099 is about 37832.8045352178. The cubic root of 1431321099 is about 1126.9700064478.

The spelling of 1431321099 in words is "one billion, four hundred thirty-one million, three hundred twenty-one thousand, ninety-nine".