1131688801 has 4 divisors (see below), whose sum is σ = 1131812500. Its totient is φ = 1131565104.

The previous prime is 1131688787. The next prime is 1131688829. The reversal of 1131688801 is 1088861311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 303630625 + 828058176 = 17425^2 + 28776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131688801 - 2⁵ = 1131688769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131688841) 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, 46926 + ... + 66823.

It is an arithmetic number, because the mean of its divisors is an integer number (282953125).

Almost surely, 2^1131688801 is an apocalyptic number.

It is an amenable number.

1131688801 is a deficient number, since it is larger than the sum of its proper divisors (123699).

1131688801 is an equidigital number, since it uses as much as digits as its factorization.

1131688801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123698.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1131688801 is about 33640.5826495321. The cubic root of 1131688801 is about 1042.0990645976.

The spelling of 1131688801 in words is "one billion, one hundred thirty-one million, six hundred eighty-eight thousand, eight hundred one".