100002131 has 4 divisors (see below), whose sum is σ = 100580352. Its totient is φ = 99423912.

The previous prime is 100002127. The next prime is 100002139. The reversal of 100002131 is 131200001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131200001 = 191 ⋅686911.

It is a cyclic number.

It is not a de Polignac number, because 100002131 - 2² = 100002127 is a prime.

It is a super-2 number, since 2×100002131² = 20000852409082322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100002139) 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 3 ways as a sum of consecutive naturals, for example, 288851 + ... + 289196.

It is an arithmetic number, because the mean of its divisors is an integer number (25145088).

Almost surely, 2^100002131 is an apocalyptic number.

100002131 is a deficient number, since it is larger than the sum of its proper divisors (578221).

100002131 is an equidigital number, since it uses as much as digits as its factorization.

100002131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578220.

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

The square root of 100002131 is about 10000.1065494324. The cubic root of 100002131 is about 464.1621804131.

Adding to 100002131 its reverse (131200001), we get a palindrome (231202132).

The spelling of 100002131 in words is "one hundred million, two thousand, one hundred thirty-one".