231394597020 has 144 divisors (see below), whose sum is σ = 728536798080. Its totient is φ = 61650662976.

The previous prime is 231394596997. The next prime is 231394597037. The reversal of 231394597020 is 20795493132.

231394597020 is a `hidden beast` number, since 2 + 3 + 1 + 39 + 4 + 597 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5631711 + ... + 5672649.

It is an arithmetic number, because the mean of its divisors is an integer number (5059283320).

Almost surely, 2^231394597020 is an apocalyptic number.

231394597020 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 231394597020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364268399040).

231394597020 is an abundant number, since it is smaller than the sum of its proper divisors (497142201060).

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

231394597020 is a wasteful number, since it uses less digits than its factorization.

231394597020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42126 (or 42112 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 231394597020 in words is "two hundred thirty-one billion, three hundred ninety-four million, five hundred ninety-seven thousand, twenty".