1001531141 has 4 divisors (see below), whose sum is σ = 1078572012. Its totient is φ = 924490272.

The previous prime is 1001531137. The next prime is 1001531143. The reversal of 1001531141 is 1411351001.

1001531141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1411351001 = 23 ⋅61363087.

It can be written as a sum of positive squares in 2 ways, for example, as 627302116 + 374229025 = 25046^2 + 19345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001531141 - 2² = 1001531137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001531143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38520416 + ... + 38520441.

It is an arithmetic number, because the mean of its divisors is an integer number (269643003).

Almost surely, 2^1001531141 is an apocalyptic number.

It is an amenable number.

1001531141 is a deficient number, since it is larger than the sum of its proper divisors (77040871).

1001531141 is an equidigital number, since it uses as much as digits as its factorization.

1001531141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77040870.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1001531141 is about 31646.9768066398. The cubic root of 1001531141 is about 1000.5101200666.

Adding to 1001531141 its reverse (1411351001), we get a palindrome (2412882142).

The spelling of 1001531141 in words is "one billion, one million, five hundred thirty-one thousand, one hundred forty-one".