1428730014431 has 6 divisors (see below), whose sum is σ = 1507884032232. Its totient is φ = 1353533697540.

The previous prime is 1428730014421. The next prime is 1428730014433. The reversal of 1428730014431 is 1344100378241.

It is a de Polignac number, because none of the positive numbers 2^k-1428730014431 is a prime.

It is a super-2 number, since 2×1428730014431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428730014433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1978850075 + ... + 1978850796.

It is an arithmetic number, because the mean of its divisors is an integer number (251314005372).

Almost surely, 2^{1428730014431} is an apocalyptic number.

1428730014431 is a deficient number, since it is larger than the sum of its proper divisors (79154017801).

1428730014431 is an equidigital number, since it uses as much as digits as its factorization.

1428730014431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957700909 (or 3957700890 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 1428730014431 in words is "one trillion, four hundred twenty-eight billion, seven hundred thirty million, fourteen thousand, four hundred thirty-one".