8131476461 has 2 divisors, whose sum is σ = 8131476462. Its totient is φ = 8131476460.

The previous prime is 8131476403. The next prime is 8131476467. The reversal of 8131476461 is 1646741318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6522985225 + 1608491236 = 80765^2 + 40106^2 .

It is a cyclic number.

It is not a de Polignac number, because 8131476461 - 2¹⁸ = 8131214317 is a prime.

It is a super-2 number, since 2×8131476461² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8131476467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4065738230 + 4065738231.

It is an arithmetic number, because the mean of its divisors is an integer number (4065738231).

Almost surely, 2^8131476461 is an apocalyptic number.

It is an amenable number.

8131476461 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131476461 is an equidigital number, since it uses as much as digits as its factorization.

8131476461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 8131476461 is about 90174.6996723582. The cubic root of 8131476461 is about 2010.8968927870.

The spelling of 8131476461 in words is "eight billion, one hundred thirty-one million, four hundred seventy-six thousand, four hundred sixty-one".