108390287 has 2 divisors, whose sum is σ = 108390288. Its totient is φ = 108390286.

The previous prime is 108390277. The next prime is 108390349. The reversal of 108390287 is 782093801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 108390287 - 2¹² = 108386191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108390287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108390277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54195143 + 54195144.

It is an arithmetic number, because the mean of its divisors is an integer number (54195144).

Almost surely, 2^108390287 is an apocalyptic number.

108390287 is a deficient number, since it is larger than the sum of its proper divisors (1).

108390287 is an equidigital number, since it uses as much as digits as its factorization.

108390287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 108390287 is about 10411.0656034817. The cubic root of 108390287 is about 476.7932759565.

The spelling of 108390287 in words is "one hundred eight million, three hundred ninety thousand, two hundred eighty-seven".