139219311 has 32 divisors (see below), whose sum is σ = 236371968. Its totient is φ = 70777440.

The previous prime is 139219261. The next prime is 139219319. The reversal of 139219311 is 113912931.

139219311 = 239² + 240² + ... + 755².

It is a happy number.

It is not a de Polignac number, because 139219311 - 2⁶ = 139219247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139219319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4446 + ... + 17268.

It is an arithmetic number, because the mean of its divisors is an integer number (7386624).

Almost surely, 2^139219311 is an apocalyptic number.

139219311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139219311 is a deficient number, since it is larger than the sum of its proper divisors (97152657).

139219311 is a wasteful number, since it uses less digits than its factorization.

139219311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891.

The product of its digits is 1458, while the sum is 30.

The square root of 139219311 is about 11799.1233148908. The cubic root of 139219311 is about 518.2824384111.

It can be divided in two parts, 13921 and 9311, that added together give a palindrome (23232).

The spelling of 139219311 in words is "one hundred thirty-nine million, two hundred nineteen thousand, three hundred eleven".