231320002 has 16 divisors (see below), whose sum is σ = 353380320. Its totient is φ = 113532448.

The previous prime is 231319987. The next prime is 231320009. The reversal of 231320002 is 200023132.

It is a happy number.

231320002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231320009) 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, 128553 + ... + 130339.

It is an arithmetic number, because the mean of its divisors is an integer number (22086270).

Almost surely, 2^231320002 is an apocalyptic number.

231320002 is a deficient number, since it is larger than the sum of its proper divisors (122060318).

231320002 is a wasteful number, since it uses less digits than its factorization.

231320002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 231320002 is about 15209.2078031698. The cubic root of 231320002 is about 613.8624416419.

Adding to 231320002 its reverse (200023132), we get a palindrome (431343134).

The spelling of 231320002 in words is "two hundred thirty-one million, three hundred twenty thousand, two".