253017231 has 16 divisors (see below), whose sum is σ = 341484000. Its totient is φ = 166624128.

The previous prime is 253017223. The next prime is 253017277. The reversal of 253017231 is 132710352.

It is not a de Polignac number, because 253017231 - 2³ = 253017223 is a prime.

It is a super-2 number, since 2×253017231² = 128035438365814722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253019231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128845 + ... + 130793.

It is an arithmetic number, because the mean of its divisors is an integer number (21342750).

Almost surely, 2^253017231 is an apocalyptic number.

253017231 is a deficient number, since it is larger than the sum of its proper divisors (88466769).

253017231 is a wasteful number, since it uses less digits than its factorization.

253017231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 253017231 is about 15906.5153632089. The cubic root of 253017231 is about 632.4847125094.

Adding to 253017231 its reverse (132710352), we get a palindrome (385727583).

The spelling of 253017231 in words is "two hundred fifty-three million, seventeen thousand, two hundred thirty-one".