1133431440 has 40 divisors (see below), whose sum is σ = 3513638208. Its totient is φ = 302248320.

The previous prime is 1133431417. The next prime is 1133431469. The reversal of 1133431440 is 441343311.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1133431440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2361076 + ... + 2361555.

Almost surely, 2^1133431440 is an apocalyptic number.

1133431440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1133431440 is an abundant number, since it is smaller than the sum of its proper divisors (2380206768).

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

1133431440 is a wasteful number, since it uses less digits than its factorization.

1133431440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722647 (or 4722641 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1133431440 is about 33666.4735307992. The cubic root of 1133431440 is about 1042.6336848155.

Adding to 1133431440 its reverse (441343311), we get a palindrome (1574774751).

The spelling of 1133431440 in words is "one billion, one hundred thirty-three million, four hundred thirty-one thousand, four hundred forty".