2105531137 has 2 divisors, whose sum is σ = 2105531138. Its totient is φ = 2105531136.

The previous prime is 2105531059. The next prime is 2105531161. The reversal of 2105531137 is 7311355012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102130801 + 3400336 = 45849^2 + 1844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105531137 is a prime.

It is a super-2 number, since 2×2105531137² = 8866522737753025538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2105531237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052765568 + 1052765569.

It is an arithmetic number, because the mean of its divisors is an integer number (1052765569).

Almost surely, 2^2105531137 is an apocalyptic number.

It is an amenable number.

2105531137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105531137 is an equidigital number, since it uses as much as digits as its factorization.

2105531137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 2105531137 is about 45886.0669157861. The cubic root of 2105531137 is about 1281.7024743930.

Adding to 2105531137 its reverse (7311355012), we get a palindrome (9416886149).

The spelling of 2105531137 in words is "two billion, one hundred five million, five hundred thirty-one thousand, one hundred thirty-seven".