2100102031 has 4 divisors (see below), whose sum is σ = 2100635392. Its totient is φ = 2099568672.

The previous prime is 2100102029. The next prime is 2100102049. The reversal of 2100102031 is 1302010012.

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 2100102031 - 2¹ = 2100102029 is a prime.

It is a super-2 number, since 2×2100102031² = 8820857081220649922, 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 = 2100101999 and 2100102017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100102001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260730 + ... + 268663.

It is an arithmetic number, because the mean of its divisors is an integer number (525158848).

Almost surely, 2^2100102031 is an apocalyptic number.

2100102031 is a deficient number, since it is larger than the sum of its proper divisors (533361).

2100102031 is an equidigital number, since it uses as much as digits as its factorization.

2100102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533360.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2100102031 is about 45826.8701855145. The cubic root of 2100102031 is about 1280.5999041394.

Adding to 2100102031 its reverse (1302010012), we get a palindrome (3402112043).

The spelling of 2100102031 in words is "two billion, one hundred million, one hundred two thousand, thirty-one".