1311011 has 4 divisors (see below), whose sum is σ = 1411872. Its totient is φ = 1210152.

The previous prime is 1311001. The next prime is 1311029. The reversal of 1311011 is 1101131.

1311011 = 164² + 165² + ... + 202².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101131 = 1013 ⋅1087.

It is a cyclic number.

It is not a de Polignac number, because 1311011 - 2¹⁴ = 1294627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311011.

It is not an unprimeable number, because it can be changed into a prime (1311001) 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, 50411 + ... + 50436.

It is an arithmetic number, because the mean of its divisors is an integer number (352968).

2^1311011 is an apocalyptic number.

1311011 is a deficient number, since it is larger than the sum of its proper divisors (100861).

1311011 is a wasteful number, since it uses less digits than its factorization.

1311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100860.

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 1311011 is about 1144.9938864466. The cubic root of 1311011 is about 109.4465589952.

Adding to 1311011 its reverse (1101131), we get a palindrome (2412142).

The spelling of 1311011 in words is "one million, three hundred eleven thousand, eleven".