231322012002 has 16 divisors (see below), whose sum is σ = 514048915680. Its totient is φ = 77107337316.

The previous prime is 231322012001. The next prime is 231322012007. The reversal of 231322012002 is 200210223132.

231322012002 is a `hidden beast` number, since 231 + 32 + 201 + 200 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (231322012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2141870428 + ... + 2141870535.

It is an arithmetic number, because the mean of its divisors is an integer number (32128057230).

Almost surely, 2^231322012002 is an apocalyptic number.

231322012002 is an abundant number, since it is smaller than the sum of its proper divisors (282726903678).

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

231322012002 is a wasteful number, since it uses less digits than its factorization.

231322012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283740974 (or 4283740968 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 231322012002 its reverse (200210223132), we get a palindrome (431532235134).

The spelling of 231322012002 in words is "two hundred thirty-one billion, three hundred twenty-two million, twelve thousand, two".