1131131004 has 24 divisors (see below), whose sum is σ = 2640277248. Its totient is φ = 376904880.

The previous prime is 1131131003. The next prime is 1131131011. The reversal of 1131131004 is 4001311311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131131003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19789 + ... + 51515.

It is an arithmetic number, because the mean of its divisors is an integer number (110011552).

Almost surely, 2^1131131004 is an apocalyptic number.

It is an amenable number.

1131131004 is an abundant number, since it is smaller than the sum of its proper divisors (1509146244).

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

1131131004 is a wasteful number, since it uses less digits than its factorization.

1131131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34705 (or 34703 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1131131004 is about 33632.2910905576. The cubic root of 1131131004 is about 1041.9278233931.

Adding to 1131131004 its reverse (4001311311), we get a palindrome (5132442315).

The spelling of 1131131004 in words is "one billion, one hundred thirty-one million, one hundred thirty-one thousand, four".