104278831 has 2 divisors, whose sum is σ = 104278832. Its totient is φ = 104278830.

The previous prime is 104278787. The next prime is 104278843. The reversal of 104278831 is 138872401.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (138872401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104278831 - 2⁹ = 104278319 is a prime.

It is a super-2 number, since 2×104278831² = 21748149189453122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104278891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52139415 + 52139416.

It is an arithmetic number, because the mean of its divisors is an integer number (52139416).

Almost surely, 2^104278831 is an apocalyptic number.

104278831 is a deficient number, since it is larger than the sum of its proper divisors (1).

104278831 is an equidigital number, since it uses as much as digits as its factorization.

104278831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 104278831 is about 10211.7006908742. The cubic root of 104278831 is about 470.6868349471.

The spelling of 104278831 in words is "one hundred four million, two hundred seventy-eight thousand, eight hundred thirty-one".