231313032012 has 24 divisors (see below), whose sum is σ = 539746830000. Its totient is φ = 77101998016.

The previous prime is 231313032011. The next prime is 231313032037. The reversal of 231313032012 is 210230313132.

It is a self number, because there is not a number n which added to its sum of digits gives 231313032012.

It is not an unprimeable number, because it can be changed into a prime (231313032011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143614 + ... + 695162.

It is an arithmetic number, because the mean of its divisors is an integer number (22489451250).

Almost surely, 2^231313032012 is an apocalyptic number.

It is an amenable number.

231313032012 is an abundant number, since it is smaller than the sum of its proper divisors (308433797988).

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

231313032012 is a wasteful number, since it uses less digits than its factorization.

231313032012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586505 (or 586503 counting only the distinct ones).

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

Adding to 231313032012 its reverse (210230313132), we get a palindrome (441543345144).

The spelling of 231313032012 in words is "two hundred thirty-one billion, three hundred thirteen million, thirty-two thousand, twelve".