231135253 has 2 divisors, whose sum is σ = 231135254. Its totient is φ = 231135252.

The previous prime is 231135239. The next prime is 231135269. The reversal of 231135253 is 352531132.

231135253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223861444 + 7273809 = 14962^2 + 2697^2 .

It is a cyclic number.

It is not a de Polignac number, because 231135253 - 2¹⁷ = 231004181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231135353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115567626 + 115567627.

It is an arithmetic number, because the mean of its divisors is an integer number (115567627).

Almost surely, 2^231135253 is an apocalyptic number.

It is an amenable number.

231135253 is a deficient number, since it is larger than the sum of its proper divisors (1).

231135253 is an equidigital number, since it uses as much as digits as its factorization.

231135253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 25.

The square root of 231135253 is about 15203.1329994840. The cubic root of 231135253 is about 613.6989730310.

Adding to 231135253 its reverse (352531132), we get a palindrome (583666385).

The spelling of 231135253 in words is "two hundred thirty-one million, one hundred thirty-five thousand, two hundred fifty-three".