1312111023320 has 32 divisors (see below), whose sum is σ = 2952948279600. Its totient is φ = 524720235648.

The previous prime is 1312111023283. The next prime is 1312111023323. The reversal of 1312111023320 is 233201112131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1312111023292 and 1312111023301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111023323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3709154 + ... + 4047473.

Almost surely, 2^{1312111023320} is an apocalyptic number.

1312111023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312111023320 is an abundant number, since it is smaller than the sum of its proper divisors (1640837256280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312111023320 is a wasteful number, since it uses less digits than its factorization.

1312111023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760867 (or 7760863 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312111023320 its reverse (233201112131), we get a palindrome (1545312135451).

The spelling of 1312111023320 in words is "one trillion, three hundred twelve billion, one hundred eleven million, twenty-three thousand, three hundred twenty".