2105250031 has 2 divisors, whose sum is σ = 2105250032. Its totient is φ = 2105250030.

The previous prime is 2105249987. The next prime is 2105250061. The reversal of 2105250031 is 1300525012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105250031 - 2²³ = 2096861423 is a prime.

It is a super-2 number, since 2×2105250031² = 8864155386051001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2105249990 and 2105250008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105250061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052625015 + 1052625016.

It is an arithmetic number, because the mean of its divisors is an integer number (1052625016).

Almost surely, 2^2105250031 is an apocalyptic number.

2105250031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105250031 is an equidigital number, since it uses as much as digits as its factorization.

2105250031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 2105250031 is about 45883.0037268704. The cubic root of 2105250031 is about 1281.6454325244.

Adding to 2105250031 its reverse (1300525012), we get a palindrome (3405775043).

The spelling of 2105250031 in words is "two billion, one hundred five million, two hundred fifty thousand, thirty-one".