1311133011 has 8 divisors (see below), whose sum is σ = 1763648400. Its totient is φ = 866353152.

The previous prime is 1311133001. The next prime is 1311133013. The reversal of 1311133011 is 1103311131.

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

It is not a de Polignac number, because 1311133011 - 2¹⁵ = 1311100243 is a prime.

It is a super-2 number, since 2×1311133011² = 3438139545067852242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311133013) 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, 1933486 + ... + 1934163.

It is an arithmetic number, because the mean of its divisors is an integer number (220456050).

Almost surely, 2^1311133011 is an apocalyptic number.

1311133011 is a deficient number, since it is larger than the sum of its proper divisors (452515389).

1311133011 is a wasteful number, since it uses less digits than its factorization.

1311133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867765.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 1311133011 is about 36209.5707099656. The cubic root of 1311133011 is about 1094.4995415354.

Adding to 1311133011 its reverse (1103311131), we get a palindrome (2414444142).

The spelling of 1311133011 in words is "one billion, three hundred eleven million, one hundred thirty-three thousand, eleven".