1131081 has 8 divisors (see below), whose sum is σ = 1723584. Its totient is φ = 646320.

The previous prime is 1131079. The next prime is 1131083. The reversal of 1131081 is 1801311.

It is an interprime number because it is at equal distance from previous prime (1131079) and next prime (1131083).

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

It is not a de Polignac number, because 1131081 - 2¹ = 1131079 is a prime.

It is a super-2 number, since 2×1131081² = 2558688457122, which contains 22 as substring.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1131081.

It is not an unprimeable number, because it can be changed into a prime (1131083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26910 + ... + 26951.

It is an arithmetic number, because the mean of its divisors is an integer number (215448).

2^1131081 is an apocalyptic number.

It is an amenable number.

1131081 is a deficient number, since it is larger than the sum of its proper divisors (592503).

1131081 is an equidigital number, since it uses as much as digits as its factorization.

1131081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53871.

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

The square root of 1131081 is about 1063.5229193581. The cubic root of 1131081 is about 104.1912469638.

Adding to 1131081 its reverse (1801311), we get a palindrome (2932392).

The spelling of 1131081 in words is "one million, one hundred thirty-one thousand, eighty-one".