1131320011 has 8 divisors (see below), whose sum is σ = 1163330784. Its totient is φ = 1099519680.

The previous prime is 1131319999. The next prime is 1131320017. The reversal of 1131320011 is 1100231311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131320011 - 2¹⁹ = 1130795723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131319973 and 1131320000.

It is not an unprimeable number, because it can be changed into a prime (1131320017) 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, 41676 + ... + 63241.

It is an arithmetic number, because the mean of its divisors is an integer number (145416348).

Almost surely, 2^1131320011 is an apocalyptic number.

1131320011 is a deficient number, since it is larger than the sum of its proper divisors (32010773).

1131320011 is a wasteful number, since it uses less digits than its factorization.

1131320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105221.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1131320011 is about 33635.1008769113. The cubic root of 1131320011 is about 1041.9858540083.

Adding to 1131320011 its reverse (1100231311), we get a palindrome (2231551322).

The spelling of 1131320011 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, eleven".