235021139 has 2 divisors, whose sum is σ = 235021140. Its totient is φ = 235021138.

The previous prime is 235021123. The next prime is 235021159. The reversal of 235021139 is 931120532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 235021139 - 2⁴ = 235021123 is a prime.

It is not a weakly prime, because it can be changed into another prime (235021159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117510569 + 117510570.

It is an arithmetic number, because the mean of its divisors is an integer number (117510570).

Almost surely, 2^235021139 is an apocalyptic number.

235021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

235021139 is an equidigital number, since it uses as much as digits as its factorization.

235021139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 235021139 is about 15330.3991794082. The cubic root of 235021139 is about 617.1190821117.

The spelling of 235021139 in words is "two hundred thirty-five million, twenty-one thousand, one hundred thirty-nine".