238131404969 has 4 divisors (see below), whose sum is σ = 238136501460. Its totient is φ = 238126308480.

The previous prime is 238131404957. The next prime is 238131404989. The reversal of 238131404969 is 969404131832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11639173225 + 226492231744 = 107885^2 + 475912^2 .

It is a cyclic number.

It is not a de Polignac number, because 238131404969 - 2¹² = 238131400873 is a prime.

It is a super-2 number, since 2×238131404969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238131404909) 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, 2477504 + ... + 2571825.

It is an arithmetic number, because the mean of its divisors is an integer number (59534125365).

Almost surely, 2^238131404969 is an apocalyptic number.

It is an amenable number.

238131404969 is a deficient number, since it is larger than the sum of its proper divisors (5096491).

238131404969 is an equidigital number, since it uses as much as digits as its factorization.

238131404969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096490.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 238131404969 in words is "two hundred thirty-eight billion, one hundred thirty-one million, four hundred four thousand, nine hundred sixty-nine".