243401133301 has 2 divisors, whose sum is σ = 243401133302. Its totient is φ = 243401133300.

The previous prime is 243401133247. The next prime is 243401133347. The reversal of 243401133301 is 103331104342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169933572900 + 73467560401 = 412230^2 + 271049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243401133301 is a prime.

It is a super-2 number, since 2×243401133301² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243441133301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121700566650 + 121700566651.

It is an arithmetic number, because the mean of its divisors is an integer number (121700566651).

Almost surely, 2^243401133301 is an apocalyptic number.

It is an amenable number.

243401133301 is a deficient number, since it is larger than the sum of its proper divisors (1).

243401133301 is an equidigital number, since it uses as much as digits as its factorization.

243401133301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 243401133301 its reverse (103331104342), we get a palindrome (346732237643).

The spelling of 243401133301 in words is "two hundred forty-three billion, four hundred one million, one hundred thirty-three thousand, three hundred one".