239272731021 has 8 divisors (see below), whose sum is σ = 320182043104. Its totient is φ = 158939286480.

The previous prime is 239272731017. The next prime is 239272731077. The reversal of 239272731021 is 120137272932.

239272731021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 239272731021 - 2² = 239272731017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239272731011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143965915 + ... + 143967576.

It is an arithmetic number, because the mean of its divisors is an integer number (40022755388).

Almost surely, 2^239272731021 is an apocalyptic number.

It is an amenable number.

239272731021 is a deficient number, since it is larger than the sum of its proper divisors (80909312083).

239272731021 is a wasteful number, since it uses less digits than its factorization.

239272731021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287933771.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 239272731021 in words is "two hundred thirty-nine billion, two hundred seventy-two million, seven hundred thirty-one thousand, twenty-one".