1431434321 has 8 divisors (see below), whose sum is σ = 1441105344. Its totient is φ = 1421776720.

The previous prime is 1431434311. The next prime is 1431434327. The reversal of 1431434321 is 1234341341.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431434321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431434327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300071 + ... + 304803.

It is an arithmetic number, because the mean of its divisors is an integer number (180138168).

Almost surely, 2^1431434321 is an apocalyptic number.

It is an amenable number.

1431434321 is a deficient number, since it is larger than the sum of its proper divisors (9671023).

1431434321 is a wasteful number, since it uses less digits than its factorization.

1431434321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711.

The product of its digits is 3456, while the sum is 26.

The square root of 1431434321 is about 37834.3008525333. The cubic root of 1431434321 is about 1126.9997212881. Note that the first 3 decimals are identical.

Adding to 1431434321 its reverse (1234341341), we get a palindrome (2665775662).

The spelling of 1431434321 in words is "one billion, four hundred thirty-one million, four hundred thirty-four thousand, three hundred twenty-one".