238131475 has 12 divisors (see below), whose sum is σ = 299330296. Its totient is φ = 187894080.

The previous prime is 238131473. The next prime is 238131511. The reversal of 238131475 is 574131832.

It is not a de Polignac number, because 238131475 - 2¹ = 238131473 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 238131475.

It is not an unprimeable number, because it can be changed into a prime (238131473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63417 + ... + 67066.

Almost surely, 2^238131475 is an apocalyptic number.

238131475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

238131475 is a deficient number, since it is larger than the sum of its proper divisors (61198821).

238131475 is a wasteful number, since it uses less digits than its factorization.

238131475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130566 (or 130561 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 238131475 is about 15431.5091614527. The cubic root of 238131475 is about 619.8295360364.

It can be divided in two parts, 2381 and 31475, that added together give a square (33856 = 184²).

The spelling of 238131475 in words is "two hundred thirty-eight million, one hundred thirty-one thousand, four hundred seventy-five".