1312102721735 has 8 divisors (see below), whose sum is σ = 1695640440480. Its totient is φ = 968937394464.

The previous prime is 1312102721723. The next prime is 1312102721749. The reversal of 1312102721735 is 5371272012131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1312102721735 is a prime.

It is a super-2 number, since 2×1312102721735² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312102721695 and 1312102721704.

It is a congruent number.

It is an unprimeable number.

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, 10093097795 + ... + 10093097924.

It is an arithmetic number, because the mean of its divisors is an integer number (211955055060).

Almost surely, 2^{1312102721735} is an apocalyptic number.

1312102721735 is a deficient number, since it is larger than the sum of its proper divisors (383537718745).

1312102721735 is a wasteful number, since it uses less digits than its factorization.

1312102721735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20186195737.

The product of its (nonzero) digits is 17640, while the sum is 35.

Adding to 1312102721735 its reverse (5371272012131), we get a palindrome (6683374733866).

The spelling of 1312102721735 in words is "one trillion, three hundred twelve billion, one hundred two million, seven hundred twenty-one thousand, seven hundred thirty-five".