1312220033 has 4 divisors (see below), whose sum is σ = 1312850880. Its totient is φ = 1311589188.

The previous prime is 1312220029. The next prime is 1312220053. The reversal of 1312220033 is 3300222131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312220033 - 2² = 1312220029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312219993 and 1312220020.

It is not an unprimeable number, because it can be changed into a prime (1312220053) 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, 312293 + ... + 316466.

It is an arithmetic number, because the mean of its divisors is an integer number (328212720).

Almost surely, 2^1312220033 is an apocalyptic number.

It is an amenable number.

1312220033 is a deficient number, since it is larger than the sum of its proper divisors (630847).

1312220033 is an equidigital number, since it uses as much as digits as its factorization.

1312220033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630846.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1312220033 is about 36224.5777477116. The cubic root of 1312220033 is about 1094.8019304941.

Adding to 1312220033 its reverse (3300222131), we get a palindrome (4612442164).

The spelling of 1312220033 in words is "one billion, three hundred twelve million, two hundred twenty thousand, thirty-three".