12031340051 has 4 divisors (see below), whose sum is σ = 12031729704. Its totient is φ = 12030950400.

The previous prime is 12031340029. The next prime is 12031340077. The reversal of 12031340051 is 15004313021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15004313021 = 137 ⋅109520533.

It is a cyclic number.

It is not a de Polignac number, because 12031340051 - 2¹⁰ = 12031339027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12039340051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144110 + ... + 211731.

It is an arithmetic number, because the mean of its divisors is an integer number (3007932426).

Almost surely, 2^12031340051 is an apocalyptic number.

12031340051 is a deficient number, since it is larger than the sum of its proper divisors (389653).

12031340051 is an equidigital number, since it uses as much as digits as its factorization.

12031340051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389652.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12031340051 its reverse (15004313021), we get a palindrome (27035653072).

The spelling of 12031340051 in words is "twelve billion, thirty-one million, three hundred forty thousand, fifty-one".