238620431 has 8 divisors (see below), whose sum is σ = 273156000. Its totient is φ = 204196608.

The previous prime is 238620419. The next prime is 238620443. The reversal of 238620431 is 134026832.

It is an interprime number because it is at equal distance from previous prime (238620419) and next prime (238620443).

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

It is a de Polignac number, because none of the positive numbers 2^k-238620431 is a prime.

It is a super-2 number, since 2×238620431² = 113879420181251522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238620394 and 238620403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238620401) 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, 23306 + ... + 31943.

It is an arithmetic number, because the mean of its divisors is an integer number (34144500).

Almost surely, 2^238620431 is an apocalyptic number.

238620431 is a deficient number, since it is larger than the sum of its proper divisors (34535569).

238620431 is an equidigital number, since it uses as much as digits as its factorization.

238620431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55873.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 238620431 is about 15447.3438169803. The cubic root of 238620431 is about 620.2534785607.

The spelling of 238620431 in words is "two hundred thirty-eight million, six hundred twenty thousand, four hundred thirty-one".