2131164047 has 16 divisors (see below), whose sum is σ = 2290552992. Its totient is φ = 1975772160.

The previous prime is 2131164043. The next prime is 2131164053. The reversal of 2131164047 is 7404611312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2131164047 - 2² = 2131164043 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 (2131164043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326003 + ... + 332475.

It is an arithmetic number, because the mean of its divisors is an integer number (143159562).

Almost surely, 2^2131164047 is an apocalyptic number.

2131164047 is a deficient number, since it is larger than the sum of its proper divisors (159388945).

2131164047 is a wasteful number, since it uses less digits than its factorization.

2131164047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 2131164047 is about 46164.5323489798. The cubic root of 2131164047 is about 1286.8826933835.

Adding to 2131164047 its reverse (7404611312), we get a palindrome (9535775359).

It can be divided in two parts, 21311 and 64047, that added together give a palindrome (85358).

The spelling of 2131164047 in words is "two billion, one hundred thirty-one million, one hundred sixty-four thousand, forty-seven".