1203344011361 has 2 divisors, whose sum is σ = 1203344011362. Its totient is φ = 1203344011360.

The previous prime is 1203344011321. The next prime is 1203344011423. The reversal of 1203344011361 is 1631104433021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075068291025 + 128275720336 = 1036855^2 + 358156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203344011361 - 2¹⁸ = 1203343749217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1203344011321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601672005680 + 601672005681.

It is an arithmetic number, because the mean of its divisors is an integer number (601672005681).

Almost surely, 2^{1203344011361} is an apocalyptic number.

It is an amenable number.

1203344011361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203344011361 is an equidigital number, since it uses as much as digits as its factorization.

1203344011361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 1203344011361 its reverse (1631104433021), we get a palindrome (2834448444382).

The spelling of 1203344011361 in words is "one trillion, two hundred three billion, three hundred forty-four million, eleven thousand, three hundred sixty-one".