231285668720 has 160 divisors (see below), whose sum is σ = 574831779840. Its totient is φ = 86351513600.

The previous prime is 231285668639. The next prime is 231285668749. The reversal of 231285668720 is 27866582132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14864945 + ... + 14880495.

It is an arithmetic number, because the mean of its divisors is an integer number (3592698624).

Almost surely, 2^231285668720 is an apocalyptic number.

231285668720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231285668720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287415889920).

231285668720 is an abundant number, since it is smaller than the sum of its proper divisors (343546111120).

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

231285668720 is a wasteful number, since it uses less digits than its factorization.

231285668720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15783 (or 15777 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 231285668720 in words is "two hundred thirty-one billion, two hundred eighty-five million, six hundred sixty-eight thousand, seven hundred twenty".