2100442302431 has 4 divisors (see below), whose sum is σ = 2291391602664. Its totient is φ = 1909493002200.

The previous prime is 2100442302421. The next prime is 2100442302443. The reversal of 2100442302431 is 1342032440012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100442302431 is a prime.

It is a super-2 number, since 2×2100442302431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100442302431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100442302421) 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, 95474650100 + ... + 95474650121.

It is an arithmetic number, because the mean of its divisors is an integer number (572847900666).

Almost surely, 2^{2100442302431} is an apocalyptic number.

2100442302431 is a deficient number, since it is larger than the sum of its proper divisors (190949300233).

2100442302431 is a wasteful number, since it uses less digits than its factorization.

2100442302431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190949300232.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 2100442302431 its reverse (1342032440012), we get a palindrome (3442474742443).

The spelling of 2100442302431 in words is "two trillion, one hundred billion, four hundred forty-two million, three hundred two thousand, four hundred thirty-one".