1312103021333 has 4 divisors (see below), whose sum is σ = 1413034022988. Its totient is φ = 1211172019680.

The previous prime is 1312103021329. The next prime is 1312103021347. The reversal of 1312103021333 is 3331203012131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128789830129 + 1183313191204 = 358873^2 + 1087802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312103021333 - 2² = 1312103021329 is a prime.

It is a super-2 number, since 2×1312103021333² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312103021299 and 1312103021308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312103021363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50465500808 + ... + 50465500833.

It is an arithmetic number, because the mean of its divisors is an integer number (353258505747).

Almost surely, 2^{1312103021333} is an apocalyptic number.

1312103021333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1312103021333 is a deficient number, since it is larger than the sum of its proper divisors (100931001655).

1312103021333 is a wasteful number, since it uses less digits than its factorization.

1312103021333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100931001654.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1312103021333 its reverse (3331203012131), we get a palindrome (4643306033464).

The spelling of 1312103021333 in words is "one trillion, three hundred twelve billion, one hundred three million, twenty-one thousand, three hundred thirty-three".