231135269 has 2 divisors, whose sum is σ = 231135270. Its totient is φ = 231135268.

The previous prime is 231135253. The next prime is 231135313. The reversal of 231135269 is 962531132.

231135269 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., 121660900 + 109474369 = 11030^2 + 10463^2 .

It is a cyclic number.

It is not a de Polignac number, because 231135269 - 2⁴ = 231135253 is a prime.

It is a super-2 number, since 2×231135269² = 106847025151404722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231135239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115567634 + 115567635.

It is an arithmetic number, because the mean of its divisors is an integer number (115567635).

Almost surely, 2^231135269 is an apocalyptic number.

It is an amenable number.

231135269 is a deficient number, since it is larger than the sum of its proper divisors (1).

231135269 is an equidigital number, since it uses as much as digits as its factorization.

231135269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 231135269 is about 15203.1335256913. The cubic root of 231135269 is about 613.6989871918.

It can be divided in two parts, 23113 and 5269, that added together give a palindrome (28382).

The spelling of 231135269 in words is "two hundred thirty-one million, one hundred thirty-five thousand, two hundred sixty-nine".