Search a number
-
+
108831871 is a prime number
BaseRepresentation
bin1100111110010…
…10010001111111
321120210020021001
412133022101333
5210330104441
614444351131
72461025041
oct637122177
9246706231
10108831871
1156483aa5
12305454a7
1319716775
141064da91
15984b731
hex67ca47f

108831871 has 2 divisors, whose sum is σ = 108831872. Its totient is φ = 108831870.

The previous prime is 108831859. The next prime is 108831881. The reversal of 108831871 is 178138801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108831871 - 213 = 108823679 is a prime.

It is a super-2 number, since 2×1088318712 = 23688752290721282, 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 108831871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108831851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54415935 + 54415936.

It is an arithmetic number, because the mean of its divisors is an integer number (54415936).

Almost surely, 2108831871 is an apocalyptic number.

108831871 is a deficient number, since it is larger than the sum of its proper divisors (1).

108831871 is an equidigital number, since it uses as much as digits as its factorization.

108831871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 37.

The square root of 108831871 is about 10432.2514827817. The cubic root of 108831871 is about 477.4398868068.

The spelling of 108831871 in words is "one hundred eight million, eight hundred thirty-one thousand, eight hundred seventy-one".