1312030133 has 4 divisors (see below), whose sum is σ = 1312260300. Its totient is φ = 1311799968.

The previous prime is 1312030127. The next prime is 1312030157. The reversal of 1312030133 is 3310302131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3310302131 = 44543 ⋅74317.

It can be written as a sum of positive squares in 2 ways, for example, as 875094724 + 436935409 = 29582^2 + 20903^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312030133 - 2⁴ = 1312030117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312030103) 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, 106310 + ... + 118007.

It is an arithmetic number, because the mean of its divisors is an integer number (328065075).

Almost surely, 2^1312030133 is an apocalyptic number.

It is an amenable number.

1312030133 is a deficient number, since it is larger than the sum of its proper divisors (230167).

1312030133 is an equidigital number, since it uses as much as digits as its factorization.

1312030133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230166.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1312030133 is about 36221.9565043083. The cubic root of 1312030133 is about 1094.7491159480.

Adding to 1312030133 its reverse (3310302131), we get a palindrome (4622332264).

The spelling of 1312030133 in words is "one billion, three hundred twelve million, thirty thousand, one hundred thirty-three".