238398313 has 8 divisors (see below), whose sum is σ = 244762056. Its totient is φ = 232060800.

The previous prime is 238398287. The next prime is 238398317. The reversal of 238398313 is 313893832.

It can be written as a sum of positive squares in 4 ways, for example, as 97344 + 238300969 = 312^2 + 15437^2 .

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 238398313 - 2⁹ = 238397801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238398317) 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, 12595 + ... + 25207.

It is an arithmetic number, because the mean of its divisors is an integer number (30595257).

Almost surely, 2^238398313 is an apocalyptic number.

It is an amenable number.

238398313 is a deficient number, since it is larger than the sum of its proper divisors (6363743).

238398313 is a wasteful number, since it uses less digits than its factorization.

238398313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13115.

The product of its digits is 93312, while the sum is 40.

The square root of 238398313 is about 15440.1526223027. The cubic root of 238398313 is about 620.0609660826.

The spelling of 238398313 in words is "two hundred thirty-eight million, three hundred ninety-eight thousand, three hundred thirteen".