231965591063028 has 96 divisors (see below), whose sum is σ = 573850682818560. Its totient is φ = 72808986311040.

The previous prime is 231965591063009. The next prime is 231965591063029. The reversal of 231965591063028 is 820360195569132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231965591063029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20428308 + ... + 29685803.

It is an arithmetic number, because the mean of its divisors is an integer number (5977611279360).

Almost surely, 2^{231965591063028} is an apocalyptic number.

It is an amenable number.

231965591063028 is an abundant number, since it is smaller than the sum of its proper divisors (341885091755532).

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

231965591063028 is a wasteful number, since it uses less digits than its factorization.

231965591063028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50114477 (or 50114475 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 60.

The spelling of 231965591063028 in words is "two hundred thirty-one trillion, nine hundred sixty-five billion, five hundred ninety-one million, sixty-three thousand, twenty-eight".