238222831 has 8 divisors (see below), whose sum is σ = 297005184. Its totient is φ = 185628120.

The previous prime is 238222823. The next prime is 238222867. The reversal of 238222831 is 138222832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238222831 - 2³ = 238222823 is a prime.

It is a super-2 number, since 2×238222831² = 113500234419309122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238222793 and 238222802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238222331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546825 + ... + 1546978.

It is an arithmetic number, because the mean of its divisors is an integer number (37125648).

Almost surely, 2^238222831 is an apocalyptic number.

238222831 is a deficient number, since it is larger than the sum of its proper divisors (58782353).

238222831 is a wasteful number, since it uses less digits than its factorization.

238222831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093821.

The product of its digits is 9216, while the sum is 31.

The square root of 238222831 is about 15434.4689251040. The cubic root of 238222831 is about 619.9087890449.

Subtracting from 238222831 its reverse (138222832), we obtain a palindrome (99999999).

The spelling of 238222831 in words is "two hundred thirty-eight million, two hundred twenty-two thousand, eight hundred thirty-one".