2100243997 has 8 divisors (see below), whose sum is σ = 2107376640. Its totient is φ = 2093123760.

The previous prime is 2100243973. The next prime is 2100244009. The reversal of 2100243997 is 7993420012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100243997 is a prime.

It is a super-2 number, since 2×2100243997² = 8822049693869072018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100243967) 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, 433963 + ... + 438775.

It is an arithmetic number, because the mean of its divisors is an integer number (263422080).

Almost surely, 2^2100243997 is an apocalyptic number.

It is an amenable number.

2100243997 is a deficient number, since it is larger than the sum of its proper divisors (7132643).

2100243997 is an equidigital number, since it uses as much as digits as its factorization.

2100243997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6203.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 2100243997 is about 45828.4190977607. The cubic root of 2100243997 is about 1280.6287594913.

The spelling of 2100243997 in words is "two billion, one hundred million, two hundred forty-three thousand, nine hundred ninety-seven".