1131312004 has 12 divisors (see below), whose sum is σ = 1988675584. Its totient is φ = 563118984.

The previous prime is 1131312001. The next prime is 1131312023. The reversal of 1131312004 is 4002131311.

It is not an unprimeable number, because it can be changed into a prime (1131312001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633252 + ... + 635035.

Almost surely, 2^1131312004 is an apocalyptic number.

It is an amenable number.

1131312004 is a deficient number, since it is larger than the sum of its proper divisors (857363580).

1131312004 is a wasteful number, since it uses less digits than its factorization.

1131312004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268514 (or 1268512 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1131312004 is about 33634.9818492593. The cubic root of 1131312004 is about 1041.9833957589.

Adding to 1131312004 its reverse (4002131311), we get a palindrome (5133443315).

The spelling of 1131312004 in words is "one billion, one hundred thirty-one million, three hundred twelve thousand, four".