239931307328 has 28 divisors (see below), whose sum is σ = 476132214612. Its totient is φ = 119960985600.

The previous prime is 239931307289. The next prime is 239931307339. The reversal of 239931307328 is 823703139932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 158633330944 + 81297976384 = 398288^2 + 285128^2 .

It is a super-2 number, since 2×239931307328² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074976 + ... + 2187552.

Almost surely, 2^239931307328 is an apocalyptic number.

It is an amenable number.

239931307328 is a deficient number, since it is larger than the sum of its proper divisors (236200907284).

239931307328 is a wasteful number, since it uses less digits than its factorization.

239931307328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145890 (or 145880 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 239931307328 in words is "two hundred thirty-nine billion, nine hundred thirty-one million, three hundred seven thousand, three hundred twenty-eight".