12131479061 has 4 divisors (see below), whose sum is σ = 13064669772. Its totient is φ = 11198288352.

The previous prime is 12131479037. The next prime is 12131479067. The reversal of 12131479061 is 16097413121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7655200036 + 4476279025 = 87494^2 + 66905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12131479061 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 (12131479067) 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, 466595336 + ... + 466595361.

It is an arithmetic number, because the mean of its divisors is an integer number (3266167443).

Almost surely, 2^12131479061 is an apocalyptic number.

It is an amenable number.

12131479061 is a deficient number, since it is larger than the sum of its proper divisors (933190711).

12131479061 is an equidigital number, since it uses as much as digits as its factorization.

12131479061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933190710.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 12131479061 in words is "twelve billion, one hundred thirty-one million, four hundred seventy-nine thousand, sixty-one".