201320543 has 2 divisors, whose sum is σ = 201320544. Its totient is φ = 201320542.

The previous prime is 201320533. The next prime is 201320549. The reversal of 201320543 is 345023102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201320543 is a prime.

It is a super-2 number, since 2×201320543² = 81059922067629698, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_11148050 and since 201320543 and 11148050 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201320549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100660271 + 100660272.

It is an arithmetic number, because the mean of its divisors is an integer number (100660272).

Almost surely, 2^201320543 is an apocalyptic number.

201320543 is a deficient number, since it is larger than the sum of its proper divisors (1).

201320543 is an equidigital number, since it uses as much as digits as its factorization.

201320543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 201320543 is about 14188.7470553252. The cubic root of 201320543 is about 586.0878222619.

Adding to 201320543 its reverse (345023102), we get a palindrome (546343645).

The spelling of 201320543 in words is "two hundred one million, three hundred twenty thousand, five hundred forty-three".