243103533451 has 2 divisors, whose sum is σ = 243103533452. Its totient is φ = 243103533450.

The previous prime is 243103533391. The next prime is 243103533457. The reversal of 243103533451 is 154335301342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243103533451 - 2¹¹ = 243103531403 is a prime.

It is a super-2 number, since 2×243103533451² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243103533457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121551766725 + 121551766726.

It is an arithmetic number, because the mean of its divisors is an integer number (121551766726).

Almost surely, 2^243103533451 is an apocalyptic number.

243103533451 is a deficient number, since it is larger than the sum of its proper divisors (1).

243103533451 is an equidigital number, since it uses as much as digits as its factorization.

243103533451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 243103533451 its reverse (154335301342), we get a palindrome (397438834793).

The spelling of 243103533451 in words is "two hundred forty-three billion, one hundred three million, five hundred thirty-three thousand, four hundred fifty-one".