1081331 has 2 divisors, whose sum is σ = 1081332. Its totient is φ = 1081330.

The previous prime is 1081307. The next prime is 1081337. The reversal of 1081331 is 1331801.

It is a strong prime.

It is an emirp because it is prime and its reverse (1331801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1081331 - 2¹⁰ = 1080307 is a prime.

It is a super-2 number, since 2×1081331² = 2338553463122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1081337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540665 + 540666.

It is an arithmetic number, because the mean of its divisors is an integer number (540666).

2^1081331 is an apocalyptic number.

1081331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081331 is an equidigital number, since it uses as much as digits as its factorization.

1081331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1081331 is about 1039.8706650348. The cubic root of 1081331 is about 102.6406872385.

The spelling of 1081331 in words is "one million, eighty-one thousand, three hundred thirty-one".