1001165131 has 2 divisors, whose sum is σ = 1001165132. Its totient is φ = 1001165130.

The previous prime is 1001165089. The next prime is 1001165141. The reversal of 1001165131 is 1315611001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1315611001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001165131 - 2²⁹ = 464294219 is a prime.

It is a super-2 number, since 2×1001165131² = 2004663239060494322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001165099 and 1001165108.

It is not a weakly prime, because it can be changed into another prime (1001165141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500582565 + 500582566.

It is an arithmetic number, because the mean of its divisors is an integer number (500582566).

Almost surely, 2^1001165131 is an apocalyptic number.

1001165131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001165131 is an equidigital number, since it uses as much as digits as its factorization.

1001165131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1001165131 is about 31641.1935773605. The cubic root of 1001165131 is about 1000.3882262609.

Adding to 1001165131 its reverse (1315611001), we get a palindrome (2316776132).

The spelling of 1001165131 in words is "one billion, one million, one hundred sixty-five thousand, one hundred thirty-one".