1312231321330 has 16 divisors (see below), whose sum is σ = 2464712743104. Its totient is φ = 502071114160.

The previous prime is 1312231321321. The next prime is 1312231321333. The reversal of 1312231321330 is 331231322131.

It is a junction number, because it is equal to n+sod(n) for n = 1312231321295 and 1312231321304.

It is not an unprimeable number, because it can be changed into a prime (1312231321333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2852676556 + ... + 2852677015.

It is an arithmetic number, because the mean of its divisors is an integer number (154044546444).

Almost surely, 2^{1312231321330} is an apocalyptic number.

1312231321330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312231321330 is a deficient number, since it is larger than the sum of its proper divisors (1152481421774).

1312231321330 is a wasteful number, since it uses less digits than its factorization.

1312231321330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5705353601.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1312231321330 its reverse (331231322131), we get a palindrome (1643462643461).

The spelling of 1312231321330 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty".