231343101660 has 144 divisors (see below), whose sum is σ = 713329608096. Its totient is φ = 55978560000.

The previous prime is 231343101617. The next prime is 231343101683. The reversal of 231343101660 is 66101343132.

231343101660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3898210 + ... + 3957110.

It is an arithmetic number, because the mean of its divisors is an integer number (4953677834).

Almost surely, 2^231343101660 is an apocalyptic number.

231343101660 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 231343101660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356664804048).

231343101660 is an abundant number, since it is smaller than the sum of its proper divisors (481986506436).

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

231343101660 is a wasteful number, since it uses less digits than its factorization.

231343101660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59476 (or 59463 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 231343101660 its reverse (66101343132), we get a palindrome (297444444792).

The spelling of 231343101660 in words is "two hundred thirty-one billion, three hundred forty-three million, one hundred one thousand, six hundred sixty".