1312112031233 has 4 divisors (see below), whose sum is σ = 1312114888260. Its totient is φ = 1312109174208.

The previous prime is 1312112031211. The next prime is 1312112031277. The reversal of 1312112031233 is 3321302112131.

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 381691667344 + 930420363889 = 617812^2 + 964583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312112031233 - 2¹² = 1312112027137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312112031199 and 1312112031208.

It is not an unprimeable number, because it can be changed into a prime (1312112031283) 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, 566060 + ... + 1715997.

It is an arithmetic number, because the mean of its divisors is an integer number (328028722065).

Almost surely, 2^{1312112031233} is an apocalyptic number.

It is an amenable number.

1312112031233 is a deficient number, since it is larger than the sum of its proper divisors (2857027).

1312112031233 is an equidigital number, since it uses as much as digits as its factorization.

1312112031233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857026.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1312112031233 its reverse (3321302112131), we get a palindrome (4633414143364).

The spelling of 1312112031233 in words is "one trillion, three hundred twelve billion, one hundred twelve million, thirty-one thousand, two hundred thirty-three".