811623107 has 2 divisors, whose sum is σ = 811623108. Its totient is φ = 811623106.

The previous prime is 811623097. The next prime is 811623143. The reversal of 811623107 is 701326118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 811623107 - 2¹⁰ = 811622083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 811623107.

It is not a weakly prime, because it can be changed into another prime (811623187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405811553 + 405811554.

It is an arithmetic number, because the mean of its divisors is an integer number (405811554).

Almost surely, 2^811623107 is an apocalyptic number.

811623107 is a deficient number, since it is larger than the sum of its proper divisors (1).

811623107 is an equidigital number, since it uses as much as digits as its factorization.

811623107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 811623107 is about 28488.9997542911. Note that the first 3 decimals coincide. The cubic root of 811623107 is about 932.7919747344.

The spelling of 811623107 in words is "eight hundred eleven million, six hundred twenty-three thousand, one hundred seven".