1312002322320 has 40 divisors (see below), whose sum is σ = 4067207199936. Its totient is φ = 349867285888.

The previous prime is 1312002322283. The next prime is 1312002322327. The reversal of 1312002322320 is 232232002131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1312002322327) 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, 2733337932 + ... + 2733338411.

Almost surely, 2^{1312002322320} is an apocalyptic number.

1312002322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312002322320 is an abundant number, since it is smaller than the sum of its proper divisors (2755204877616).

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

1312002322320 is a wasteful number, since it uses less digits than its factorization.

1312002322320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466676359 (or 5466676353 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1312002322320 its reverse (232232002131), we get a palindrome (1544234324451).

The spelling of 1312002322320 in words is "one trillion, three hundred twelve billion, two million, three hundred twenty-two thousand, three hundred twenty".