1153432331 has 4 divisors (see below), whose sum is σ = 1154327064. Its totient is φ = 1152537600.

The previous prime is 1153432321. The next prime is 1153432333. The reversal of 1153432331 is 1332343511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1153432331 is a prime.

It is a super-2 number, since 2×1153432331² = 2660812284392187122, 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 1153432331.

It is not an unprimeable number, because it can be changed into a prime (1153432333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445430 + ... + 448011.

It is an arithmetic number, because the mean of its divisors is an integer number (288581766).

Almost surely, 2^1153432331 is an apocalyptic number.

1153432331 is a deficient number, since it is larger than the sum of its proper divisors (894733).

1153432331 is an equidigital number, since it uses as much as digits as its factorization.

1153432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894732.

The product of its digits is 3240, while the sum is 26.

The square root of 1153432331 is about 33962.2191707197. The cubic root of 1153432331 is about 1048.7308417663.

Adding to 1153432331 its reverse (1332343511), we get a palindrome (2485775842).

The spelling of 1153432331 in words is "one billion, one hundred fifty-three million, four hundred thirty-two thousand, three hundred thirty-one".