238979131 has 8 divisors (see below), whose sum is σ = 262494720. Its totient is φ = 216557352.

The previous prime is 238979129. The next prime is 238979137. The reversal of 238979131 is 131979832.

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 238979131 - 2¹ = 238979129 is a prime.

It is a super-2 number, since 2×238979131² = 114222050107030322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238979137) 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, 272995 + ... + 273868.

It is an arithmetic number, because the mean of its divisors is an integer number (32811840).

Almost surely, 2^238979131 is an apocalyptic number.

238979131 is a deficient number, since it is larger than the sum of its proper divisors (23515589).

238979131 is a wasteful number, since it uses less digits than its factorization.

238979131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546905.

The product of its digits is 81648, while the sum is 43.

The square root of 238979131 is about 15458.9498673099. The cubic root of 238979131 is about 620.5641163006.

The spelling of 238979131 in words is "two hundred thirty-eight million, nine hundred seventy-nine thousand, one hundred thirty-one".