108311906 has 4 divisors (see below), whose sum is σ = 162467862. Its totient is φ = 54155952.

The previous prime is 108311893. The next prime is 108311911. The reversal of 108311906 is 609113801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609113801 = 2011 ⋅302891.

It can be written as a sum of positive squares in only one way, i.e., 93296281 + 15015625 = 9659^2 + 3875^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27077975 + ... + 27077978.

Almost surely, 2^108311906 is an apocalyptic number.

108311906 is a deficient number, since it is larger than the sum of its proper divisors (54155956).

108311906 is an equidigital number, since it uses as much as digits as its factorization.

108311906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54155955.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 108311906 is about 10407.3006106291. The cubic root of 108311906 is about 476.6783193287.

The spelling of 108311906 in words is "one hundred eight million, three hundred eleven thousand, nine hundred six".