1002081331 has 8 divisors (see below), whose sum is σ = 1026970560. Its totient is φ = 977264232.

The previous prime is 1002081281. The next prime is 1002081347. The reversal of 1002081331 is 1331802001.

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 1002081331 - 2¹⁵ = 1002048563 is a prime.

It is a super-2 number, since 2×1002081331² = 2008333987877463122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002081299 and 1002081308.

It is not an unprimeable number, because it can be changed into a prime (1002081361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10656 + ... + 46018.

It is an arithmetic number, because the mean of its divisors is an integer number (128371320).

Almost surely, 2^1002081331 is an apocalyptic number.

1002081331 is a deficient number, since it is larger than the sum of its proper divisors (24889229).

1002081331 is an equidigital number, since it uses as much as digits as its factorization.

1002081331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36065.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1002081331 is about 31655.6682286127. The cubic root of 1002081331 is about 1000.6932962293.

Adding to 1002081331 its reverse (1331802001), we get a palindrome (2333883332).

The spelling of 1002081331 in words is "one billion, two million, eighty-one thousand, three hundred thirty-one".