238217331 has 16 divisors (see below), whose sum is σ = 346965120. Its totient is φ = 144179520.

The previous prime is 238217327. The next prime is 238217333. The reversal of 238217331 is 133712832.

It is not a de Polignac number, because 238217331 - 2² = 238217327 is a prime.

It is a super-2 number, since 2×238217331² = 113494993577527122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238217333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22236 + ... + 31158.

It is an arithmetic number, because the mean of its divisors is an integer number (21685320).

Almost surely, 2^238217331 is an apocalyptic number.

238217331 is a deficient number, since it is larger than the sum of its proper divisors (108747789).

238217331 is a wasteful number, since it uses less digits than its factorization.

238217331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746.

The product of its digits is 6048, while the sum is 30.

The square root of 238217331 is about 15434.2907514404. The cubic root of 238217331 is about 619.9040182671.

The spelling of 238217331 in words is "two hundred thirty-eight million, two hundred seventeen thousand, three hundred thirty-one".