1431218879 has 4 divisors (see below), whose sum is σ = 1447300080. Its totient is φ = 1415137680.

The previous prime is 1431218863. The next prime is 1431218897. The reversal of 1431218879 is 9788121341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1431218879 - 2⁴ = 1431218863 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 (1431218809) 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 3 ways as a sum of consecutive naturals, for example, 8040467 + ... + 8040644.

It is an arithmetic number, because the mean of its divisors is an integer number (361825020).

Almost surely, 2^1431218879 is an apocalyptic number.

1431218879 is a deficient number, since it is larger than the sum of its proper divisors (16081201).

1431218879 is an equidigital number, since it uses as much as digits as its factorization.

1431218879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16081200.

The product of its digits is 96768, while the sum is 44.

The square root of 1431218879 is about 37831.4535671047. The cubic root of 1431218879 is about 1126.9431777097.

The spelling of 1431218879 in words is "one billion, four hundred thirty-one million, two hundred eighteen thousand, eight hundred seventy-nine".