139311108 has 18 divisors (see below), whose sum is σ = 352147614. Its totient is φ = 46437024.

The previous prime is 139311103. The next prime is 139311113. The reversal of 139311108 is 801113931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139311103) and next prime (139311113).

It can be written as a sum of positive squares in only one way, i.e., 138721284 + 589824 = 11778^2 + 768^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (139311103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1934841 + ... + 1934912.

Almost surely, 2^139311108 is an apocalyptic number.

139311108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139311108 is an abundant number, since it is smaller than the sum of its proper divisors (212836506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139311108 is a wasteful number, since it uses less digits than its factorization.

139311108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869763 (or 3869758 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 139311108 is about 11803.0126662645. The cubic root of 139311108 is about 518.3963266344.

The spelling of 139311108 in words is "one hundred thirty-nine million, three hundred eleven thousand, one hundred eight".