1312210033 has 4 divisors (see below), whose sum is σ = 1312287460. Its totient is φ = 1312132608.

The previous prime is 1312210027. The next prime is 1312210049. The reversal of 1312210033 is 3300122131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3300122131 = 401 ⋅8229731.

It can be written as a sum of positive squares in 2 ways, for example, as 615883489 + 696326544 = 24817^2 + 26388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312210033 is a prime.

It is a super-2 number, since 2×1312210033² = 3443790341411722178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312209989 and 1312210016.

It is not an unprimeable number, because it can be changed into a prime (1312210073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128 + ... + 51241.

It is an arithmetic number, because the mean of its divisors is an integer number (328071865).

Almost surely, 2^1312210033 is an apocalyptic number.

It is an amenable number.

1312210033 is a deficient number, since it is larger than the sum of its proper divisors (77427).

1312210033 is an equidigital number, since it uses as much as digits as its factorization.

1312210033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77426.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1312210033 is about 36224.4397196147. The cubic root of 1312210033 is about 1094.7991494445.

Adding to 1312210033 its reverse (3300122131), we get a palindrome (4612332164).

The spelling of 1312210033 in words is "one billion, three hundred twelve million, two hundred ten thousand, thirty-three".