1312101320 has 16 divisors (see below), whose sum is σ = 2952228060. Its totient is φ = 524840512.

The previous prime is 1312101313. The next prime is 1312101347. The reversal of 1312101320 is 231012131.

It can be written as a sum of positive squares in 2 ways, for example, as 1211179204 + 100922116 = 34802^2 + 10046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312101295 and 1312101304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16401227 + ... + 16401306.

Almost surely, 2^1312101320 is an apocalyptic number.

1312101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312101320 is an abundant number, since it is smaller than the sum of its proper divisors (1640126740).

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

1312101320 is a wasteful number, since it uses less digits than its factorization.

1312101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32802544 (or 32802540 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1312101320 is about 36222.9391408262. The cubic root of 1312101320 is about 1094.7689149079.

Adding to 1312101320 its reverse (231012131), we get a palindrome (1543113451).

The spelling of 1312101320 in words is "one billion, three hundred twelve million, one hundred one thousand, three hundred twenty".