2134991 has 2 divisors, whose sum is σ = 2134992. Its totient is φ = 2134990.

The previous prime is 2134963. The next prime is 2135017. The reversal of 2134991 is 1994312.

It is a happy number.

2134991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2134991 - 2⁶ = 2134927 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 3¹³ + 4⁵ + 9 + 9⁶ + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067495 + 1067496.

It is an arithmetic number, because the mean of its divisors is an integer number (1067496).

2^2134991 is an apocalyptic number.

2134991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134991 is an equidigital number, since it uses as much as digits as its factorization.

2134991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 2134991 is about 1461.1608398804. The cubic root of 2134991 is about 128.7652522227.

It can be divided in two parts, 2134 and 991, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2134991 in words is "two million, one hundred thirty-four thousand, nine hundred ninety-one".