12051931297 has 4 divisors (see below), whose sum is σ = 13773635776. Its totient is φ = 10330226820.

The previous prime is 12051931279. The next prime is 12051931313. The reversal of 12051931297 is 79213915021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79213915021 = 89 ⋅890043989.

It is a cyclic number.

It is not a de Polignac number, because 12051931297 - 2⁷ = 12051931169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12051931217) 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, 860852229 + ... + 860852242.

It is an arithmetic number, because the mean of its divisors is an integer number (3443408944).

Almost surely, 2^12051931297 is an apocalyptic number.

It is an amenable number.

12051931297 is a deficient number, since it is larger than the sum of its proper divisors (1721704479).

12051931297 is an equidigital number, since it uses as much as digits as its factorization.

12051931297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721704478.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 12051931297 in words is "twelve billion, fifty-one million, nine hundred thirty-one thousand, two hundred ninety-seven".