Search a number
-
+
108236831 is a prime number
BaseRepresentation
bin1100111001110…
…01000000011111
321112200000000112
412130321000133
5210202034311
614423520235
72452666163
oct634710037
9245600015
10108236831
1156107a2a
12302b907b
1319568981
1410536ca3
15978028b
hex673901f

108236831 has 2 divisors, whose sum is σ = 108236832. Its totient is φ = 108236830.

The previous prime is 108236819. The next prime is 108236839. The reversal of 108236831 is 138632801.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (138632801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108236831 - 222 = 104042527 is a prime.

It is a super-2 number, since 2×1082368312 = 23430423169845122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108236839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54118415 + 54118416.

It is an arithmetic number, because the mean of its divisors is an integer number (54118416).

Almost surely, 2108236831 is an apocalyptic number.

108236831 is a deficient number, since it is larger than the sum of its proper divisors (1).

108236831 is an equidigital number, since it uses as much as digits as its factorization.

108236831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 108236831 is about 10403.6931423413. The cubic root of 108236831 is about 476.5681593975.

The spelling of 108236831 in words is "one hundred eight million, two hundred thirty-six thousand, eight hundred thirty-one".