1135431136 has 72 divisors (see below), whose sum is σ = 2670755976. Its totient is φ = 473437440.

The previous prime is 1135431131. The next prime is 1135431149. The reversal of 1135431136 is 6311345311.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135431131) 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, 48231 + ... + 67801.

It is an arithmetic number, because the mean of its divisors is an integer number (37093833).

Almost surely, 2^1135431136 is an apocalyptic number.

1135431136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1135431136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1335377988).

1135431136 is an abundant number, since it is smaller than the sum of its proper divisors (1535324840).

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

1135431136 is a wasteful number, since it uses less digits than its factorization.

1135431136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19632 (or 19617 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 1135431136 is about 33696.1590689503. The cubic root of 1135431136 is about 1043.2464921976.

Adding to 1135431136 its reverse (6311345311), we get a palindrome (7446776447).

The spelling of 1135431136 in words is "one billion, one hundred thirty-five million, four hundred thirty-one thousand, one hundred thirty-six".