1331011 has 4 divisors (see below), whose sum is σ = 1452024. Its totient is φ = 1210000.

The previous prime is 1330997. The next prime is 1331023. The reversal of 1331011 is 1101331.

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

It is not a de Polignac number, because 1331011 - 2⁹ = 1330499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331041) 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, 60490 + ... + 60511.

It is an arithmetic number, because the mean of its divisors is an integer number (363006).

2^1331011 is an apocalyptic number.

1331011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1331011 is a deficient number, since it is larger than the sum of its proper divisors (121013).

1331011 is a wasteful number, since it uses less digits than its factorization.

1331011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121012.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 1331011 is about 1153.6945002903. The cubic root of 1331011 is about 110.0003030295. Note that the first 3 decimals are identical.

Adding to 1331011 its reverse (1101331), we get a palindrome (2432342).

The spelling of 1331011 in words is "one million, three hundred thirty-one thousand, eleven".