1812313051 has 4 divisors (see below), whose sum is σ = 1834148232. Its totient is φ = 1790477872.

The previous prime is 1812313049. The next prime is 1812313057. The reversal of 1812313051 is 1503132181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1503132181 = 349 ⋅4306969.

It is a cyclic number.

It is not a de Polignac number, because 1812313051 - 2¹ = 1812313049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1812313057) 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, 10917466 + ... + 10917631.

It is an arithmetic number, because the mean of its divisors is an integer number (458537058).

Almost surely, 2^1812313051 is an apocalyptic number.

1812313051 is a deficient number, since it is larger than the sum of its proper divisors (21835181).

1812313051 is an equidigital number, since it uses as much as digits as its factorization.

1812313051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21835180.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1812313051 is about 42571.2702535407. The cubic root of 1812313051 is about 1219.2078192831.

The spelling of 1812313051 in words is "one billion, eight hundred twelve million, three hundred thirteen thousand, fifty-one".