1311402341241 has 20 divisors (see below), whose sum is σ = 1959293226000. Its totient is φ = 874141131096.

The previous prime is 1311402341191. The next prime is 1311402341269. The reversal of 1311402341241 is 1421432041131.

It is a happy number.

1311402341241 is a `hidden beast` number, since 1 + 3 + 11 + 402 + 3 + 4 + 1 + 241 = 666.

It is not a de Polignac number, because 1311402341241 - 2⁶ = 1311402341177 is a prime.

It is a super-2 number, since 2×1311402341241² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1311402345241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 614551 + ... + 1732188.

It is an arithmetic number, because the mean of its divisors is an integer number (97964661300).

Almost surely, 2^{1311402341241} is an apocalyptic number.

It is an amenable number.

1311402341241 is a deficient number, since it is larger than the sum of its proper divisors (647890884759).

1311402341241 is an equidigital number, since it uses as much as digits as its factorization.

1311402341241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353650 (or 2353641 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1311402341241 its reverse (1421432041131), we get a palindrome (2732834382372).

The spelling of 1311402341241 in words is "one trillion, three hundred eleven billion, four hundred two million, three hundred forty-one thousand, two hundred forty-one".