231728826258 has 12 divisors (see below), whose sum is σ = 502079123598. Its totient is φ = 77242942080.

The previous prime is 231728826233. The next prime is 231728826317. The reversal of 231728826258 is 852628827132.

231728826258 is a `hidden beast` number, since 2 + 3 + 1 + 7 + 2 + 8 + 8 + 2 + 625 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 230143751289 + 1585074969 = 479733^2 + 39813^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6436911823 + ... + 6436911858.

Almost surely, 2^231728826258 is an apocalyptic number.

231728826258 is an abundant number, since it is smaller than the sum of its proper divisors (270350297340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231728826258 is a wasteful number, since it uses less digits than its factorization.

231728826258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873823689 (or 12873823686 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 231728826258 in words is "two hundred thirty-one billion, seven hundred twenty-eight million, eight hundred twenty-six thousand, two hundred fifty-eight".