1081311 has 32 divisors (see below), whose sum is σ = 1867776. Its totient is φ = 540000.

The previous prime is 1081307. The next prime is 1081331. The reversal of 1081311 is 1131801.

It is not a de Polignac number, because 1081311 - 2² = 1081307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7086 + ... + 7236.

It is an arithmetic number, because the mean of its divisors is an integer number (58368).

2^1081311 is an apocalyptic number.

1081311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1081311 is a deficient number, since it is larger than the sum of its proper divisors (786465).

1081311 is a wasteful number, since it uses less digits than its factorization.

1081311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1081311 is about 1039.8610484098. The cubic root of 1081311 is about 102.6400544300.

The spelling of 1081311 in words is "one million, eighty-one thousand, three hundred eleven".