235388381 has 2 divisors, whose sum is σ = 235388382. Its totient is φ = 235388380.

The previous prime is 235388323. The next prime is 235388399. The reversal of 235388381 is 183883532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143880025 + 91508356 = 11995^2 + 9566^2 .

It is a cyclic number.

It is not a de Polignac number, because 235388381 - 2¹⁰ = 235387357 is a prime.

It is a super-2 number, since 2×235388381² = 110815379819602322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235388311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117694190 + 117694191.

It is an arithmetic number, because the mean of its divisors is an integer number (117694191).

Almost surely, 2^235388381 is an apocalyptic number.

It is an amenable number.

235388381 is a deficient number, since it is larger than the sum of its proper divisors (1).

235388381 is an equidigital number, since it uses as much as digits as its factorization.

235388381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 235388381 is about 15342.3720786585. The cubic root of 235388381 is about 617.4403498140.

The spelling of 235388381 in words is "two hundred thirty-five million, three hundred eighty-eight thousand, three hundred eighty-one".