238869311 has 4 divisors (see below), whose sum is σ = 251441400. Its totient is φ = 226297224.

The previous prime is 238869287. The next prime is 238869361. The reversal of 238869311 is 113968832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238869311 - 2⁶ = 238869247 is a prime.

It is a super-2 number, since 2×238869311² = 114117095475229442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238869361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6286016 + ... + 6286053.

It is an arithmetic number, because the mean of its divisors is an integer number (62860350).

Almost surely, 2^238869311 is an apocalyptic number.

238869311 is a deficient number, since it is larger than the sum of its proper divisors (12572089).

238869311 is a wasteful number, since it uses less digits than its factorization.

238869311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12572088.

The product of its digits is 62208, while the sum is 41.

The square root of 238869311 is about 15455.3974714337. The cubic root of 238869311 is about 620.4690441314.

The spelling of 238869311 in words is "two hundred thirty-eight million, eight hundred sixty-nine thousand, three hundred eleven".