139282931 has 2 divisors, whose sum is σ = 139282932. Its totient is φ = 139282930.

The previous prime is 139282903. The next prime is 139282937.

139282931 is nontrivially palindromic in base 10.

139282931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 139282931 - 2⁶ = 139282867 is a prime.

It is a super-2 number, since 2×139282931² = 38799469735901522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139282937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69641465 + 69641466.

It is an arithmetic number, because the mean of its divisors is an integer number (69641466).

Almost surely, 2^139282931 is an apocalyptic number.

139282931 is a deficient number, since it is larger than the sum of its proper divisors (1).

139282931 is an equidigital number, since it uses as much as digits as its factorization.

139282931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 139282931 is about 11801.8189699724. The cubic root of 139282931 is about 518.3613740777.

The spelling of 139282931 in words is "one hundred thirty-nine million, two hundred eighty-two thousand, nine hundred thirty-one".