816500034131 has 2 divisors, whose sum is σ = 816500034132. Its totient is φ = 816500034130.

The previous prime is 816500034089. The next prime is 816500034173. The reversal of 816500034131 is 131430005618.

It is a balanced prime because it is at equal distance from previous prime (816500034089) and next prime (816500034173).

It is a cyclic number.

It is not a de Polignac number, because 816500034131 - 2¹⁴ = 816500017747 is a prime.

It is a super-2 number, since 2×816500034131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (816500034331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408250017065 + 408250017066.

It is an arithmetic number, because the mean of its divisors is an integer number (408250017066).

Almost surely, 2^816500034131 is an apocalyptic number.

816500034131 is a deficient number, since it is larger than the sum of its proper divisors (1).

816500034131 is an equidigital number, since it uses as much as digits as its factorization.

816500034131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 816500034131 its reverse (131430005618), we get a palindrome (947930039749).

The spelling of 816500034131 in words is "eight hundred sixteen billion, five hundred million, thirty-four thousand, one hundred thirty-one".