1242320401311 has 16 divisors (see below), whose sum is σ = 1832462362368. Its totient is φ = 742316926400.

The previous prime is 1242320401307. The next prime is 1242320401321. The reversal of 1242320401311 is 1131040232421.

It is a cyclic number.

It is not a de Polignac number, because 1242320401311 - 2² = 1242320401307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242320401321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265110846 + ... + 265115531.

It is an arithmetic number, because the mean of its divisors is an integer number (114528897648).

Almost surely, 2^{1242320401311} is an apocalyptic number.

1242320401311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1242320401311 is a deficient number, since it is larger than the sum of its proper divisors (590141961057).

1242320401311 is a wasteful number, since it uses less digits than its factorization.

1242320401311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530226462.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1242320401311 its reverse (1131040232421), we get a palindrome (2373360633732).

The spelling of 1242320401311 in words is "one trillion, two hundred forty-two billion, three hundred twenty million, four hundred one thousand, three hundred eleven".