1311031331330 has 16 divisors (see below), whose sum is σ = 2696978738880. Its totient is φ = 449496456432.

The previous prime is 1311031331303. The next prime is 1311031331371. The reversal of 1311031331330 is 331331301131.

It is a junction number, because it is equal to n+sod(n) for n = 1311031331296 and 1311031331305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9364509440 + ... + 9364509579.

It is an arithmetic number, because the mean of its divisors is an integer number (168561171180).

Almost surely, 2^{1311031331330} is an apocalyptic number.

1311031331330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311031331330 is an abundant number, since it is smaller than the sum of its proper divisors (1385947407550).

1311031331330 is a wasteful number, since it uses less digits than its factorization.

1311031331330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18729019033.

The product of its (nonzero) digits is 729, while the sum is 23.

Adding to 1311031331330 its reverse (331331301131), we get a palindrome (1642362632461).

The spelling of 1311031331330 in words is "one trillion, three hundred eleven billion, thirty-one million, three hundred thirty-one thousand, three hundred thirty".