108320857 has 2 divisors, whose sum is σ = 108320858. Its totient is φ = 108320856.

The previous prime is 108320813. The next prime is 108320897. The reversal of 108320857 is 758023801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82065481 + 26255376 = 9059^2 + 5124^2 .

It is a cyclic number.

It is not a de Polignac number, because 108320857 - 2¹¹ = 108318809 is a prime.

It is a super-2 number, since 2×108320857² = 23466816122428898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (108320897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54160428 + 54160429.

It is an arithmetic number, because the mean of its divisors is an integer number (54160429).

Almost surely, 2^108320857 is an apocalyptic number.

It is an amenable number.

108320857 is a deficient number, since it is larger than the sum of its proper divisors (1).

108320857 is an equidigital number, since it uses as much as digits as its factorization.

108320857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 108320857 is about 10407.7306364068. The cubic root of 108320857 is about 476.6914500185.

The spelling of 108320857 in words is "one hundred eight million, three hundred twenty thousand, eight hundred fifty-seven".