1153431132 has 24 divisors (see below), whose sum is σ = 3075816576. Its totient is φ = 329551728.

The previous prime is 1153431131. The next prime is 1153431143. The reversal of 1153431132 is 2311343511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153431131) 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 7 ways as a sum of consecutive naturals, for example, 6865578 + ... + 6865745.

It is an arithmetic number, because the mean of its divisors is an integer number (128159024).

Almost surely, 2^1153431132 is an apocalyptic number.

1153431132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1153431132 is an abundant number, since it is smaller than the sum of its proper divisors (1922385444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153431132 is a wasteful number, since it uses less digits than its factorization.

1153431132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13731337 (or 13731335 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 1153431132 is about 33962.2015187473. The cubic root of 1153431132 is about 1048.7304783788.

Adding to 1153431132 its reverse (2311343511), we get a palindrome (3464774643).

The spelling of 1153431132 in words is "one billion, one hundred fifty-three million, four hundred thirty-one thousand, one hundred thirty-two".