238432031 has 2 divisors, whose sum is σ = 238432032. Its totient is φ = 238432030.

The previous prime is 238432027. The next prime is 238432037. The reversal of 238432031 is 130234832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238432031 - 2² = 238432027 is a prime.

It is a super-2 number, since 2×238432031² = 113699666813569922, which contains 22 as substring.

It is equal to p_13080383 and since 238432031 and 13080383 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238432037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119216015 + 119216016.

It is an arithmetic number, because the mean of its divisors is an integer number (119216016).

Almost surely, 2^238432031 is an apocalyptic number.

238432031 is a deficient number, since it is larger than the sum of its proper divisors (1).

238432031 is an equidigital number, since it uses as much as digits as its factorization.

238432031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 238432031 is about 15441.2444770491. The cubic root of 238432031 is about 620.0901975954.

Adding to 238432031 its reverse (130234832), we get a palindrome (368666863).

The spelling of 238432031 in words is "two hundred thirty-eight million, four hundred thirty-two thousand, thirty-one".