1243412342231 has 2 divisors, whose sum is σ = 1243412342232. Its totient is φ = 1243412342230.

The previous prime is 1243412342201. The next prime is 1243412342251. The reversal of 1243412342231 is 1322432143421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243412342231 - 2³⁸ = 968534435287 is a prime.

It is a super-2 number, since 2×1243412342231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243412342201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621706171115 + 621706171116.

It is an arithmetic number, because the mean of its divisors is an integer number (621706171116).

Almost surely, 2^{1243412342231} is an apocalyptic number.

1243412342231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243412342231 is an equidigital number, since it uses as much as digits as its factorization.

1243412342231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 32.

Adding to 1243412342231 its reverse (1322432143421), we get a palindrome (2565844485652).

The spelling of 1243412342231 in words is "one trillion, two hundred forty-three billion, four hundred twelve million, three hundred forty-two thousand, two hundred thirty-one".