1081431 has 30 divisors (see below), whose sum is σ = 1771440. Its totient is φ = 657072.

The previous prime is 1081429. The next prime is 1081441. The reversal of 1081431 is 1341801.

It is not a de Polignac number, because 1081431 - 2¹ = 1081429 is a prime.

It is a super-2 number, since 2×1081431² = 2338986015522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081441) 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 29 ways as a sum of consecutive naturals, for example, 13650 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (59048).

2^1081431 is an apocalyptic number.

1081431 is a deficient number, since it is larger than the sum of its proper divisors (690009).

1081431 is an equidigital number, since it uses as much as digits as its factorization.

1081431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1081431 is about 1039.9187468259. The cubic root of 1081431 is about 102.6438511641.

The spelling of 1081431 in words is "one million, eighty-one thousand, four hundred thirty-one".