238523403 has 4 divisors (see below), whose sum is σ = 318031208. Its totient is φ = 159015600.

The previous prime is 238523387. The next prime is 238523419. The reversal of 238523403 is 304325832.

238523403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (238523387) and next prime (238523419).

It is not a de Polignac number, because 238523403 - 2⁴ = 238523387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238523443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39753898 + ... + 39753903.

It is an arithmetic number, because the mean of its divisors is an integer number (79507802).

Almost surely, 2^238523403 is an apocalyptic number.

238523403 is a deficient number, since it is larger than the sum of its proper divisors (79507805).

238523403 is an equidigital number, since it uses as much as digits as its factorization.

238523403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79507804.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 238523403 is about 15444.2028929952. The cubic root of 238523403 is about 620.1693978679.

The spelling of 238523403 in words is "two hundred thirty-eight million, five hundred twenty-three thousand, four hundred three".