104218831 has 2 divisors, whose sum is σ = 104218832. Its totient is φ = 104218830.

The previous prime is 104218783. The next prime is 104218859. The reversal of 104218831 is 138812401.

It is an a-pointer prime, because the next prime (104218859) can be obtained adding 104218831 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 104218831 - 2⁷ = 104218703 is a prime.

It is a super-2 number, since 2×104218831² = 21723129470013122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 104218831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104218861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52109415 + 52109416.

It is an arithmetic number, because the mean of its divisors is an integer number (52109416).

Almost surely, 2^104218831 is an apocalyptic number.

104218831 is a deficient number, since it is larger than the sum of its proper divisors (1).

104218831 is an equidigital number, since it uses as much as digits as its factorization.

104218831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 104218831 is about 10208.7624617286. The cubic root of 104218831 is about 470.5965429609.

The spelling of 104218831 in words is "one hundred four million, two hundred eighteen thousand, eight hundred thirty-one".