1312031330 has 16 divisors (see below), whose sum is σ = 2362984704. Its totient is φ = 524517360.

The previous prime is 1312031323. The next prime is 1312031333. The reversal of 1312031330 is 331302131.

1312031330 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1312031299 and 1312031308.

It is not an unprimeable number, because it can be changed into a prime (1312031333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17756 + ... + 54215.

It is an arithmetic number, because the mean of its divisors is an integer number (147686544).

Almost surely, 2^1312031330 is an apocalyptic number.

1312031330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312031330 is a deficient number, since it is larger than the sum of its proper divisors (1050953374).

1312031330 is a wasteful number, since it uses less digits than its factorization.

1312031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73801.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1312031330 is about 36221.9730274318. The cubic root of 1312031330 is about 1094.7494488708.

Adding to 1312031330 its reverse (331302131), we get a palindrome (1643333461).

The spelling of 1312031330 in words is "one billion, three hundred twelve million, thirty-one thousand, three hundred thirty".