139148131 has 4 divisors (see below), whose sum is σ = 139175064. Its totient is φ = 139121200.

The previous prime is 139148117. The next prime is 139148167. The reversal of 139148131 is 131841931.

139148131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139148131 - 2⁵ = 139148099 is a prime.

It is a super-2 number, since 2×139148131² = 38724404721586322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139148093 and 139148102.

It is not an unprimeable number, because it can be changed into a prime (139148171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (34793766).

Almost surely, 2^139148131 is an apocalyptic number.

139148131 is a deficient number, since it is larger than the sum of its proper divisors (26933).

139148131 is an equidigital number, since it uses as much as digits as its factorization.

139148131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26932.

The product of its digits is 2592, while the sum is 31.

The square root of 139148131 is about 11796.1066034518. The cubic root of 139148131 is about 518.1940942660.

The spelling of 139148131 in words is "one hundred thirty-nine million, one hundred forty-eight thousand, one hundred thirty-one".