1231240344001 has 2 divisors, whose sum is σ = 1231240344002. Its totient is φ = 1231240344000.

The previous prime is 1231240343999. The next prime is 1231240344007. The reversal of 1231240344001 is 1004430421321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230002993025 + 1237350976 = 1109055^2 + 35176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231240344001 - 2¹ = 1231240343999 is a prime.

Together with 1231240343999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1231240344007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615620172000 + 615620172001.

It is an arithmetic number, because the mean of its divisors is an integer number (615620172001).

Almost surely, 2^{1231240344001} is an apocalyptic number.

It is an amenable number.

1231240344001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231240344001 is an equidigital number, since it uses as much as digits as its factorization.

1231240344001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1231240344001 its reverse (1004430421321), we get a palindrome (2235670765322).

The spelling of 1231240344001 in words is "one trillion, two hundred thirty-one billion, two hundred forty million, three hundred forty-four thousand, one".