1131320604 has 12 divisors (see below), whose sum is σ = 2639748104. Its totient is φ = 377106864.

The previous prime is 1131320581. The next prime is 1131320609. The reversal of 1131320604 is 4060231311.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131320609) 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, 47138347 + ... + 47138370.

Almost surely, 2^1131320604 is an apocalyptic number.

It is an amenable number.

1131320604 is an abundant number, since it is smaller than the sum of its proper divisors (1508427500).

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

1131320604 is a wasteful number, since it uses less digits than its factorization.

1131320604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94276724 (or 94276722 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1131320604 is about 33635.1096921060. The cubic root of 1131320604 is about 1041.9860360663.

Adding to 1131320604 its reverse (4060231311), we get a palindrome (5191551915).

The spelling of 1131320604 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, six hundred four".