235648139 has 2 divisors, whose sum is σ = 235648140. Its totient is φ = 235648138.

The previous prime is 235648109. The next prime is 235648151. The reversal of 235648139 is 931846532.

235648139 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 cyclic number.

It is not a de Polignac number, because 235648139 - 2⁸ = 235647883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 235648096 and 235648105.

It is not a weakly prime, because it can be changed into another prime (235648109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117824069 + 117824070.

It is an arithmetic number, because the mean of its divisors is an integer number (117824070).

Almost surely, 2^235648139 is an apocalyptic number.

235648139 is a deficient number, since it is larger than the sum of its proper divisors (1).

235648139 is an equidigital number, since it uses as much as digits as its factorization.

235648139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 235648139 is about 15350.8351238622. The cubic root of 235648139 is about 617.6673875141.

The spelling of 235648139 in words is "two hundred thirty-five million, six hundred forty-eight thousand, one hundred thirty-nine".