139033331 has 2 divisors, whose sum is σ = 139033332. Its totient is φ = 139033330.

The previous prime is 139033303. The next prime is 139033333. The reversal of 139033331 is 133330931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139033331 is a prime.

It is a super-2 number, since 2×139033331² = 38660534257911122, which contains 22 as substring.

Together with 139033333, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139033331.

It is not a weakly prime, because it can be changed into another prime (139033333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69516665 + 69516666.

It is an arithmetic number, because the mean of its divisors is an integer number (69516666).

Almost surely, 2^139033331 is an apocalyptic number.

139033331 is a deficient number, since it is larger than the sum of its proper divisors (1).

139033331 is an equidigital number, since it uses as much as digits as its factorization.

139033331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 26.

The square root of 139033331 is about 11791.2395870833. The cubic root of 139033331 is about 518.0515482160.

The spelling of 139033331 in words is "one hundred thirty-nine million, thirty-three thousand, three hundred thirty-one".