2100235451 has 4 divisors (see below), whose sum is σ = 2129816304. Its totient is φ = 2070654600.

The previous prime is 2100235447. The next prime is 2100235463. The reversal of 2100235451 is 1545320012.

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 2100235451 - 2² = 2100235447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100235441) 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 3 ways as a sum of consecutive naturals, for example, 14790320 + ... + 14790461.

It is an arithmetic number, because the mean of its divisors is an integer number (532454076).

Almost surely, 2^2100235451 is an apocalyptic number.

2100235451 is a deficient number, since it is larger than the sum of its proper divisors (29580853).

2100235451 is an equidigital number, since it uses as much as digits as its factorization.

2100235451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29580852.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2100235451 is about 45828.3258585779. The cubic root of 2100235451 is about 1280.6270225077.

Adding to 2100235451 its reverse (1545320012), we get a palindrome (3645555463).

The spelling of 2100235451 in words is "two billion, one hundred million, two hundred thirty-five thousand, four hundred fifty-one".