1001131045 has 8 divisors (see below), whose sum is σ = 1224024696. Its totient is φ = 785793216.

The previous prime is 1001131013. The next prime is 1001131049. The reversal of 1001131045 is 5401311001.

It can be written as a sum of positive squares in 4 ways, for example, as 57289761 + 943841284 = 7569^2 + 30722^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1001131045 - 2⁵ = 1001131013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001131049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1888662 + ... + 1889191.

It is an arithmetic number, because the mean of its divisors is an integer number (153003087).

Almost surely, 2^1001131045 is an apocalyptic number.

It is an amenable number.

1001131045 is a deficient number, since it is larger than the sum of its proper divisors (222893651).

1001131045 is an equidigital number, since it uses as much as digits as its factorization.

1001131045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777911.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1001131045 is about 31640.6549394920. The cubic root of 1001131045 is about 1000.3768729489.

Adding to 1001131045 its reverse (5401311001), we get a palindrome (6402442046).

The spelling of 1001131045 in words is "one billion, one million, one hundred thirty-one thousand, forty-five".