253478231 has 8 divisors (see below), whose sum is σ = 260786400. Its totient is φ = 246194208.

The previous prime is 253478213. The next prime is 253478233. The reversal of 253478231 is 132874352.

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

It is a cyclic number.

It is not a de Polignac number, because 253478231 - 2⁶ = 253478167 is a prime.

It is a super-2 number, since 2×253478231² = 128502427181778722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253478191 and 253478200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253478233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16445 + ... + 27881.

It is an arithmetic number, because the mean of its divisors is an integer number (32598300).

Almost surely, 2^253478231 is an apocalyptic number.

253478231 is a deficient number, since it is larger than the sum of its proper divisors (7308169).

253478231 is a wasteful number, since it uses less digits than its factorization.

253478231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12073.

The product of its digits is 40320, while the sum is 35.

The square root of 253478231 is about 15920.9996859494. Note that the first 3 decimals coincide. The cubic root of 253478231 is about 632.8686106677.

The spelling of 253478231 in words is "two hundred fifty-three million, four hundred seventy-eight thousand, two hundred thirty-one".