231662259747072 has 3024 divisors, whose sum is σ = 902201415091200. Its totient is φ = 58664283955200.

The previous prime is 231662259747043. The next prime is 231662259747151. The reversal of 231662259747072 is 270747952266132.

It is a happy number.

231662259747072 is a `hidden beast` number, since 2 + 3 + 1 + 6 + 6 + 2 + 2 + 5 + 97 + 470 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (3024).

It is a super-2 number, since 2×231662259747072² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 1164131958429 + ... + 1164131958627.

It is an arithmetic number, because the mean of its divisors is an integer number (298347028800).

Almost surely, 2^{231662259747072} is an apocalyptic number.

231662259747072 is a gapful number since it is divisible by the number (22) 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 231662259747072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451100707545600).

231662259747072 is an abundant number, since it is smaller than the sum of its proper divisors (670539155344128).

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

231662259747072 is a wasteful number, since it uses less digits than its factorization.

231662259747072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 63.

The spelling of 231662259747072 in words is "two hundred thirty-one trillion, six hundred sixty-two billion, two hundred fifty-nine million, seven hundred forty-seven thousand, seventy-two".