2131049 has 2 divisors, whose sum is σ = 2131050. Its totient is φ = 2131048.

The previous prime is 2131043. The next prime is 2131081. The reversal of 2131049 is 9401312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 71824 = 1435^2 + 268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131049 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131049.

It is not a weakly prime, because it can be changed into another prime (2131043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065524 + 1065525.

It is an arithmetic number, because the mean of its divisors is an integer number (1065525).

2^2131049 is an apocalyptic number.

It is an amenable number.

2131049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131049 is an equidigital number, since it uses as much as digits as its factorization.

2131049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2131049 is about 1459.8112891740. The cubic root of 2131049 is about 128.6859536296.

The spelling of 2131049 in words is "two million, one hundred thirty-one thousand, forty-nine".