1428434231 has 36 divisors (see below), whose sum is σ = 1858393800. Its totient is φ = 1091494656.

The previous prime is 1428434221. The next prime is 1428434257. The reversal of 1428434231 is 1324348241.

It is not a de Polignac number, because 1428434231 - 2⁶ = 1428434167 is a prime.

It is a super-2 number, since 2×1428434231² = 4080848704585122722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428434221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 266405 + ... + 271713.

It is an arithmetic number, because the mean of its divisors is an integer number (51622050).

Almost surely, 2^1428434231 is an apocalyptic number.

1428434231 is a deficient number, since it is larger than the sum of its proper divisors (429959569).

1428434231 is a wasteful number, since it uses less digits than its factorization.

1428434231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5352 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 1428434231 is about 37794.6323040720. The cubic root of 1428434231 is about 1126.2118249787.

The spelling of 1428434231 in words is "one billion, four hundred twenty-eight million, four hundred thirty-four thousand, two hundred thirty-one".