2108205031 has 2 divisors, whose sum is σ = 2108205032. Its totient is φ = 2108205030.

The previous prime is 2108205007. The next prime is 2108205053. The reversal of 2108205031 is 1305028012.

It is an a-pointer prime, because the next prime (2108205053) can be obtained adding 2108205031 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2108205031 - 2⁹ = 2108204519 is a prime.

It is a super-2 number, since 2×2108205031² = 8889056905467421922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2108204993 and 2108205011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2108205061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054102515 + 1054102516.

It is an arithmetic number, because the mean of its divisors is an integer number (1054102516).

Almost surely, 2^2108205031 is an apocalyptic number.

2108205031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108205031 is an equidigital number, since it uses as much as digits as its factorization.

2108205031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2108205031 is about 45915.1939013656. The cubic root of 2108205031 is about 1282.2448057741.

The spelling of 2108205031 in words is "two billion, one hundred eight million, two hundred five thousand, thirty-one".