1312013220233 has 8 divisors (see below), whose sum is σ = 1394134211880. Its totient is φ = 1230441533440.

The previous prime is 1312013220229. The next prime is 1312013220269. The reversal of 1312013220233 is 3320223102131.

It can be written as a sum of positive squares in 4 ways, for example, as 301853545744 + 1010159674489 = 549412^2 + 1005067^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1312013220233 - 2² = 1312013220229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312013220199 and 1312013220208.

It is not an unprimeable number, because it can be changed into a prime (1312013220283) 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, 137321288 + ... + 137330841.

It is an arithmetic number, because the mean of its divisors is an integer number (174266776485).

Almost surely, 2^{1312013220233} is an apocalyptic number.

It is an amenable number.

1312013220233 is a deficient number, since it is larger than the sum of its proper divisors (82120991647).

1312013220233 is a wasteful number, since it uses less digits than its factorization.

1312013220233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274652427.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1312013220233 its reverse (3320223102131), we get a palindrome (4632236322364).

The spelling of 1312013220233 in words is "one trillion, three hundred twelve billion, thirteen million, two hundred twenty thousand, two hundred thirty-three".