231716268546 has 128 divisors (see below), whose sum is σ = 575301242880. Its totient is φ = 60702566400.

The previous prime is 231716268491. The next prime is 231716268547. The reversal of 231716268546 is 645862617132.

It is a Harshad number since it is a multiple of its sum of digits (51).

Its product of digits (2903040) is a multiple of the sum of its prime divisors (11520).

It is not an unprimeable number, because it can be changed into a prime (231716268547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21628131 + ... + 21638841.

It is an arithmetic number, because the mean of its divisors is an integer number (4494540960).

Almost surely, 2^231716268546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231716268546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287650621440).

231716268546 is an abundant number, since it is smaller than the sum of its proper divisors (343584974334).

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

231716268546 is a wasteful number, since it uses less digits than its factorization.

231716268546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11520.

The product of its digits is 2903040, while the sum is 51.

The spelling of 231716268546 in words is "two hundred thirty-one billion, seven hundred sixteen million, two hundred sixty-eight thousand, five hundred forty-six".