1002131 has 8 divisors (see below), whose sum is σ = 1088304. Its totient is φ = 917280.

The previous prime is 1002121. The next prime is 1002143. The reversal of 1002131 is 1312001.

1002131 = T₂₅ + T₂₆ + ... + T₁₈₁.

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

It is not a de Polignac number, because 1002131 - 2¹⁰ = 1001107 is a prime.

It is a super-2 number, since 2×1002131² = 2008533082322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1796 + ... + 2286.

It is an arithmetic number, because the mean of its divisors is an integer number (136038).

2^1002131 is an apocalyptic number.

1002131 is a deficient number, since it is larger than the sum of its proper divisors (86173).

1002131 is a wasteful number, since it uses less digits than its factorization.

1002131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1002131 is about 1001.0649329589. The cubic root of 1002131 is about 100.0709829356.

Adding to 1002131 its reverse (1312001), we get a palindrome (2314132).

The spelling of 1002131 in words is "one million, two thousand, one hundred thirty-one".