231657744153208 has 8 divisors (see below), whose sum is σ = 434358270287280. Its totient is φ = 115828872076600.

The previous prime is 231657744153197. The next prime is 231657744153317. The reversal of 231657744153208 is 802351447756132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14478609009568 + ... + 14478609009583.

It is an arithmetic number, because the mean of its divisors is an integer number (54294783785910).

Almost surely, 2^{231657744153208} is an apocalyptic number.

It is an amenable number.

231657744153208 is a deficient number, since it is larger than the sum of its proper divisors (202700526134072).

231657744153208 is a wasteful number, since it uses less digits than its factorization.

231657744153208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28957218019157 (or 28957218019153 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 58.

The spelling of 231657744153208 in words is "two hundred thirty-one trillion, six hundred fifty-seven billion, seven hundred forty-four million, one hundred fifty-three thousand, two hundred eight".