32911997 has 2 divisors, whose sum is σ = 32911998. Its totient is φ = 32911996.

The previous prime is 32911951. The next prime is 32911999. The reversal of 32911997 is 79911923.

32911997 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26429881 + 6482116 = 5141^2 + 2546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32911997 is a prime.

Together with 32911999, 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 (32911999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16455998 + 16455999.

It is an arithmetic number, because the mean of its divisors is an integer number (16455999).

Almost surely, 2^32911997 is an apocalyptic number.

It is an amenable number.

32911997 is a deficient number, since it is larger than the sum of its proper divisors (1).

32911997 is an equidigital number, since it uses as much as digits as its factorization.

32911997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 41.

The square root of 32911997 is about 5736.8978551130. The cubic root of 32911997 is about 320.4680552889.

The spelling of 32911997 in words is "thirty-two million, nine hundred eleven thousand, nine hundred ninety-seven".