2131166047 has 2 divisors, whose sum is σ = 2131166048. Its totient is φ = 2131166046.

The previous prime is 2131166029. The next prime is 2131166069. The reversal of 2131166047 is 7406611312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131166047 - 2⁷ = 2131165919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131166077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065583023 + 1065583024.

It is an arithmetic number, because the mean of its divisors is an integer number (1065583024).

Almost surely, 2^2131166047 is an apocalyptic number.

2131166047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131166047 is an equidigital number, since it uses as much as digits as its factorization.

2131166047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 2131166047 is about 46164.5540106259. The cubic root of 2131166047 is about 1286.8830959436.

Adding to 2131166047 its reverse (7406611312), we get a palindrome (9537777359).

The spelling of 2131166047 in words is "two billion, one hundred thirty-one million, one hundred sixty-six thousand, forty-seven".