2100442431 has 8 divisors (see below), whose sum is σ = 2803765120. Its totient is φ = 1398707352.

The previous prime is 2100442427. The next prime is 2100442493. The reversal of 2100442431 is 1342440012.

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

It is not a de Polignac number, because 2100442431 - 2² = 2100442427 is a prime.

It is a super-2 number, since 2×2100442431² = 8823716811890379522, 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 = 2100442398 and 2100442407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100442031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393811 + ... + 399108.

It is an arithmetic number, because the mean of its divisors is an integer number (350470640).

Almost surely, 2^2100442431 is an apocalyptic number.

2100442431 is a deficient number, since it is larger than the sum of its proper divisors (703322689).

2100442431 is an equidigital number, since it uses as much as digits as its factorization.

2100442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793805.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2100442431 is about 45830.5840132984. The cubic root of 2100442431 is about 1280.6690900886.

Adding to 2100442431 its reverse (1342440012), we get a palindrome (3442882443).

The spelling of 2100442431 in words is "two billion, one hundred million, four hundred forty-two thousand, four hundred thirty-one".