32317421 has 2 divisors, whose sum is σ = 32317422. Its totient is φ = 32317420.

The previous prime is 32317409. The next prime is 32317429. The reversal of 32317421 is 12471323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29041321 + 3276100 = 5389^2 + 1810^2 .

It is an emirp because it is prime and its reverse (12471323) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32317421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32317429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16158710 + 16158711.

It is an arithmetic number, because the mean of its divisors is an integer number (16158711).

Almost surely, 2^32317421 is an apocalyptic number.

It is an amenable number.

32317421 is a deficient number, since it is larger than the sum of its proper divisors (1).

32317421 is an equidigital number, since it uses as much as digits as its factorization.

32317421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 32317421 is about 5684.8413346372. The cubic root of 32317421 is about 318.5264968628.

Adding to 32317421 its reverse (12471323), we get a palindrome (44788744).

The spelling of 32317421 in words is "thirty-two million, three hundred seventeen thousand, four hundred twenty-one".