1311132011 has 16 divisors (see below), whose sum is σ = 1561817088. Its totient is φ = 1076997600.

The previous prime is 1311132007. The next prime is 1311132019. The reversal of 1311132011 is 1102311131.

It is a happy number.

It is not a de Polignac number, because 1311132011 - 2² = 1311132007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311132019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6980 + ... + 51681.

It is an arithmetic number, because the mean of its divisors is an integer number (97613568).

Almost surely, 2^1311132011 is an apocalyptic number.

1311132011 is a deficient number, since it is larger than the sum of its proper divisors (250685077).

1311132011 is a wasteful number, since it uses less digits than its factorization.

1311132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58802.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1311132011 is about 36209.5569014590. The cubic root of 1311132011 is about 1094.4992632774.

Adding to 1311132011 its reverse (1102311131), we get a palindrome (2413443142).

The spelling of 1311132011 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, eleven".