1131440504 has 8 divisors (see below), whose sum is σ = 2121450960. Its totient is φ = 565720248.

The previous prime is 1131440489. The next prime is 1131440507. The reversal of 1131440504 is 4050441311.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1131440504² = 2560315228183548032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131440504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131440507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70715024 + ... + 70715039.

It is an arithmetic number, because the mean of its divisors is an integer number (265181370).

Almost surely, 2^1131440504 is an apocalyptic number.

It is an amenable number.

1131440504 is a deficient number, since it is larger than the sum of its proper divisors (990010456).

1131440504 is a wasteful number, since it uses less digits than its factorization.

1131440504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141430069 (or 141430065 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1131440504 is about 33636.8920086265. The cubic root of 1131440504 is about 1042.0228454706.

Adding to 1131440504 its reverse (4050441311), we get a palindrome (5181881815).

The spelling of 1131440504 in words is "one billion, one hundred thirty-one million, four hundred forty thousand, five hundred four".