231428127 has 12 divisors (see below), whose sum is σ = 358949976. Its totient is φ = 132244560.

The previous prime is 231428063. The next prime is 231428143. The reversal of 231428127 is 721824132.

It is not a de Polignac number, because 231428127 - 2⁶ = 231428063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231428094 and 231428103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231428927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 787024 + ... + 787317.

It is an arithmetic number, because the mean of its divisors is an integer number (29912498).

Almost surely, 2^231428127 is an apocalyptic number.

231428127 is a deficient number, since it is larger than the sum of its proper divisors (127521849).

231428127 is a wasteful number, since it uses less digits than its factorization.

231428127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574358 (or 1574351 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 231428127 is about 15212.7619780236. The cubic root of 231428127 is about 613.9580718468.

The spelling of 231428127 in words is "two hundred thirty-one million, four hundred twenty-eight thousand, one hundred twenty-seven".