20134997 has 2 divisors, whose sum is σ = 20134998. Its totient is φ = 20134996.

The previous prime is 20134991. The next prime is 20134999. The reversal of 20134997 is 79943102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 8031556 = 3479^2 + 2834^2 .

It is a cyclic number.

It is not a de Polignac number, because 20134997 - 2⁴ = 20134981 is a prime.

Together with 20134999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20134991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067498 + 10067499.

It is an arithmetic number, because the mean of its divisors is an integer number (10067499).

Almost surely, 2^20134997 is an apocalyptic number.

It is an amenable number.

20134997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134997 is an equidigital number, since it uses as much as digits as its factorization.

20134997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20134997 is about 4487.2036949530. The cubic root of 20134997 is about 272.0511230680.

The spelling of 20134997 in words is "twenty million, one hundred thirty-four thousand, nine hundred ninety-seven".