235138223237 has 2 divisors, whose sum is σ = 235138223238. Its totient is φ = 235138223236.

The previous prime is 235138223227. The next prime is 235138223273. The reversal of 235138223237 is 732322831532.

Together with next prime (235138223273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235032009601 + 106213636 = 484801^2 + 10306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235138223237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 235138223194 and 235138223203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235138223227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117569111618 + 117569111619.

It is an arithmetic number, because the mean of its divisors is an integer number (117569111619).

Almost surely, 2^235138223237 is an apocalyptic number.

It is an amenable number.

235138223237 is a deficient number, since it is larger than the sum of its proper divisors (1).

235138223237 is an equidigital number, since it uses as much as digits as its factorization.

235138223237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 41.

The spelling of 235138223237 in words is "two hundred thirty-five billion, one hundred thirty-eight million, two hundred twenty-three thousand, two hundred thirty-seven".