231313020132 has 12 divisors (see below), whose sum is σ = 539730380336. Its totient is φ = 77104340040.

The previous prime is 231313020109. The next prime is 231313020143. The reversal of 231313020132 is 231020313132.

231313020132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 231313020099 and 231313020108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9638042494 + ... + 9638042517.

Almost surely, 2^231313020132 is an apocalyptic number.

It is an amenable number.

231313020132 is an abundant number, since it is smaller than the sum of its proper divisors (308417360204).

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

231313020132 is a wasteful number, since it uses less digits than its factorization.

231313020132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19276085018 (or 19276085016 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231313020132 its reverse (231020313132), we get a palindrome (462333333264).

The spelling of 231313020132 in words is "two hundred thirty-one billion, three hundred thirteen million, twenty thousand, one hundred thirty-two".