100436131 has 4 divisors (see below), whose sum is σ = 100456200. Its totient is φ = 100416064.

The previous prime is 100436129. The next prime is 100436143. The reversal of 100436131 is 131634001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100436131 - 2¹ = 100436129 is a prime.

It is a super-2 number, since 2×100436131² = 20174832820498322, 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 = 100436099 and 100436108.

It is not an unprimeable number, because it can be changed into a prime (100436111) 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, 4275 + ... + 14803.

It is an arithmetic number, because the mean of its divisors is an integer number (25114050).

Almost surely, 2^100436131 is an apocalyptic number.

100436131 is a deficient number, since it is larger than the sum of its proper divisors (20069).

100436131 is an equidigital number, since it uses as much as digits as its factorization.

100436131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20068.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 100436131 is about 10021.7828254258. The cubic root of 100436131 is about 464.8326850158.

The spelling of 100436131 in words is "one hundred million, four hundred thirty-six thousand, one hundred thirty-one".