2105257331 has 2 divisors, whose sum is σ = 2105257332. Its totient is φ = 2105257330.

The previous prime is 2105257309. The next prime is 2105257379. The reversal of 2105257331 is 1337525012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105257331 - 2¹⁴ = 2105240947 is a prime.

It is a super-2 number, since 2×2105257331² = 8864216859458487122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2105257294 and 2105257303.

It is not a weakly prime, because it can be changed into another prime (2102257331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052628665 + 1052628666.

It is an arithmetic number, because the mean of its divisors is an integer number (1052628666).

Almost surely, 2^2105257331 is an apocalyptic number.

2105257331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105257331 is an equidigital number, since it uses as much as digits as its factorization.

2105257331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 2105257331 is about 45883.0832769551. The cubic root of 2105257331 is about 1281.6469139005.

The spelling of 2105257331 in words is "two billion, one hundred five million, two hundred fifty-seven thousand, three hundred thirty-one".