238143321 has 40 divisors (see below), whose sum is σ = 403307520. Its totient is φ = 138824928.

The previous prime is 238143307. The next prime is 238143337. The reversal of 238143321 is 123341832.

It is not a de Polignac number, because 238143321 - 2⁵ = 238143289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (238143341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14056 + ... + 25958.

It is an arithmetic number, because the mean of its divisors is an integer number (10082688).

Almost surely, 2^238143321 is an apocalyptic number.

It is an amenable number.

238143321 is a deficient number, since it is larger than the sum of its proper divisors (165164199).

238143321 is a wasteful number, since it uses less digits than its factorization.

238143321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11947 (or 11938 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 238143321 is about 15431.8929817440. The cubic root of 238143321 is about 619.8398138027.

The spelling of 238143321 in words is "two hundred thirty-eight million, one hundred forty-three thousand, three hundred twenty-one".