1135231201 has 4 divisors (see below), whose sum is σ = 1222556692. Its totient is φ = 1047905712.

The previous prime is 1135231199. The next prime is 1135231231. The reversal of 1135231201 is 1021325311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 614296225 + 520934976 = 24785^2 + 22824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135231201 - 2¹ = 1135231199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1135231231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43662726 + ... + 43662751.

It is an arithmetic number, because the mean of its divisors is an integer number (305639173).

Almost surely, 2^1135231201 is an apocalyptic number.

It is an amenable number.

1135231201 is a deficient number, since it is larger than the sum of its proper divisors (87325491).

1135231201 is an equidigital number, since it uses as much as digits as its factorization.

1135231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87325490.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1135231201 is about 33693.1922055480. The cubic root of 1135231201 is about 1043.1852544513.

Adding to 1135231201 its reverse (1021325311), we get a palindrome (2156556512).

The spelling of 1135231201 in words is "one billion, one hundred thirty-five million, two hundred thirty-one thousand, two hundred one".