139050631 has 2 divisors, whose sum is σ = 139050632. Its totient is φ = 139050630.

The previous prime is 139050623. The next prime is 139050671. The reversal of 139050631 is 136050931.

139050631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139050631 - 2³ = 139050623 is a prime.

It is a super-2 number, since 2×139050631² = 38670155962996322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139050631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139050671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69525315 + 69525316.

It is an arithmetic number, because the mean of its divisors is an integer number (69525316).

Almost surely, 2^139050631 is an apocalyptic number.

139050631 is a deficient number, since it is larger than the sum of its proper divisors (1).

139050631 is an equidigital number, since it uses as much as digits as its factorization.

139050631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 139050631 is about 11791.9731597388. The cubic root of 139050631 is about 518.0730344789.

The spelling of 139050631 in words is "one hundred thirty-nine million, fifty thousand, six hundred thirty-one".