1081431001 has 16 divisors (see below), whose sum is σ = 1297428480. Its totient is φ = 881825040.

The previous prime is 1081430993. The next prime is 1081431007. The reversal of 1081431001 is 1001341801.

It is a cyclic number.

It is not a de Polignac number, because 1081431001 - 2³ = 1081430993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081431001.

It is not an unprimeable number, because it can be changed into a prime (1081431007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29431 + ... + 55036.

It is an arithmetic number, because the mean of its divisors is an integer number (81089280).

Almost surely, 2^1081431001 is an apocalyptic number.

It is an amenable number.

1081431001 is a deficient number, since it is larger than the sum of its proper divisors (215997479).

1081431001 is an equidigital number, since it uses as much as digits as its factorization.

1081431001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84564.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1081431001 is about 32885.1182299836. The cubic root of 1081431001 is about 1026.4385119570.

Adding to 1081431001 its reverse (1001341801), we get a palindrome (2082772802).

The spelling of 1081431001 in words is "one billion, eighty-one million, four hundred thirty-one thousand, one".