2131547079 has 4 divisors (see below), whose sum is σ = 2842062776. Its totient is φ = 1421031384.

The previous prime is 2131547071. The next prime is 2131547083. The reversal of 2131547079 is 9707451312.

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

It is not a de Polignac number, because 2131547079 - 2³ = 2131547071 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 (2131547071) 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, 355257844 + ... + 355257849.

It is an arithmetic number, because the mean of its divisors is an integer number (710515694).

Almost surely, 2^2131547079 is an apocalyptic number.

2131547079 is a deficient number, since it is larger than the sum of its proper divisors (710515697).

2131547079 is an equidigital number, since it uses as much as digits as its factorization.

2131547079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710515696.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 2131547079 is about 46168.6807153941. The cubic root of 2131547079 is about 1286.9597854818.

The spelling of 2131547079 in words is "two billion, one hundred thirty-one million, five hundred forty-seven thousand, seventy-nine".