234391878509 has 8 divisors (see below), whose sum is σ = 243009477120. Its totient is φ = 225840315600.

The previous prime is 234391878499. The next prime is 234391878533. The reversal of 234391878509 is 905878193432.

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 234391878509 - 2⁴ = 234391878493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234391878109) 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, 16501697 + ... + 16515894.

It is an arithmetic number, because the mean of its divisors is an integer number (30376184640).

Almost surely, 2^234391878509 is an apocalyptic number.

It is an amenable number.

234391878509 is a deficient number, since it is larger than the sum of its proper divisors (8617598611).

234391878509 is a wasteful number, since it uses less digits than its factorization.

234391878509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33017851.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 234391878509 in words is "two hundred thirty-four billion, three hundred ninety-one million, eight hundred seventy-eight thousand, five hundred nine".