2102831 has 2 divisors, whose sum is σ = 2102832. Its totient is φ = 2102830.

The previous prime is 2102809. The next prime is 2102839. The reversal of 2102831 is 1382012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2102831 - 2¹⁰ = 2101807 is a prime.

It is a super-2 number, since 2×2102831² = 8843796429122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051415 + 1051416.

It is an arithmetic number, because the mean of its divisors is an integer number (1051416).

2^2102831 is an apocalyptic number.

2102831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102831 is an equidigital number, since it uses as much as digits as its factorization.

2102831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2102831 is about 1450.1141334392. The cubic root of 2102831 is about 128.1154354153.

Adding to 2102831 its reverse (1382012), we get a palindrome (3484843).

The spelling of 2102831 in words is "two million, one hundred two thousand, eight hundred thirty-one".