100123200131 has 4 divisors (see below), whose sum is σ = 100124161032. Its totient is φ = 100122239232.

The previous prime is 100123200127. The next prime is 100123200179. The reversal of 100123200131 is 131002321001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100123200131 - 2² = 100123200127 is a prime.

It is a super-2 number, since 2×100123200131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100123200631) 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, 302081 + ... + 539906.

It is an arithmetic number, because the mean of its divisors is an integer number (25031040258).

Almost surely, 2^100123200131 is an apocalyptic number.

100123200131 is a deficient number, since it is larger than the sum of its proper divisors (960901).

100123200131 is an equidigital number, since it uses as much as digits as its factorization.

100123200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960900.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100123200131 its reverse (131002321001), we get a palindrome (231125521132).

The spelling of 100123200131 in words is "one hundred billion, one hundred twenty-three million, two hundred thousand, one hundred thirty-one".