1431431221439 has 8 divisors (see below), whose sum is σ = 1515227918160. Its totient is φ = 1349930324736.

The previous prime is 1431431221361. The next prime is 1431431221453. The reversal of 1431431221439 is 9341221341341.

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

It is a cyclic number.

It is not a de Polignac number, because 1431431221439 - 2³⁶ = 1362711744703 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 (1431431221489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573948722 + ... + 573951215.

It is an arithmetic number, because the mean of its divisors is an integer number (189403489770).

Almost surely, 2^{1431431221439} is an apocalyptic number.

1431431221439 is a deficient number, since it is larger than the sum of its proper divisors (83796696721).

1431431221439 is a wasteful number, since it uses less digits than its factorization.

1431431221439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147900009.

The product of its digits is 62208, while the sum is 38.

The spelling of 1431431221439 in words is "one trillion, four hundred thirty-one billion, four hundred thirty-one million, two hundred twenty-one thousand, four hundred thirty-nine".