1311423433042 has 8 divisors (see below), whose sum is σ = 1979203463856. Its totient is φ = 651688945092.

The previous prime is 1311423433009. The next prime is 1311423433043. The reversal of 1311423433042 is 2403343241131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1311423432995 and 1311423433013.

It is not an unprimeable number, because it can be changed into a prime (1311423433043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011385308 + ... + 2011385959.

It is an arithmetic number, because the mean of its divisors is an integer number (247400432982).

Almost surely, 2^{1311423433042} is an apocalyptic number.

1311423433042 is a deficient number, since it is larger than the sum of its proper divisors (667780030814).

1311423433042 is a wasteful number, since it uses less digits than its factorization.

1311423433042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022771432.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1311423433042 its reverse (2403343241131), we get a palindrome (3714766674173).

The spelling of 1311423433042 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, four hundred thirty-three thousand, forty-two".