1135453231 has 12 divisors (see below), whose sum is σ = 1252358856. Its totient is φ = 1028675120.

The previous prime is 1135453177. The next prime is 1135453247. The reversal of 1135453231 is 1323545311.

It is a happy number.

It is not a de Polignac number, because 1135453231 - 2¹¹ = 1135451183 is a prime.

It is a super-2 number, since 2×1135453231² = 2578508079576678722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1135453231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135453271) 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, 19440 + ... + 51466.

It is an arithmetic number, because the mean of its divisors is an integer number (104363238).

Almost surely, 2^1135453231 is an apocalyptic number.

1135453231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1135453231 is a deficient number, since it is larger than the sum of its proper divisors (116905625).

1135453231 is a wasteful number, since it uses less digits than its factorization.

1135453231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32342 (or 32331 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 1135453231 is about 33696.4869237136. The cubic root of 1135453231 is about 1043.2532591959.

Adding to 1135453231 its reverse (1323545311), we get a palindrome (2458998542).

The spelling of 1135453231 in words is "one billion, one hundred thirty-five million, four hundred fifty-three thousand, two hundred thirty-one".