231223212002 has 16 divisors (see below), whose sum is σ = 351315581400. Its totient is φ = 114122342400.

The previous prime is 231223211983. The next prime is 231223212007. The reversal of 231223212002 is 200212322132.

It is a happy number.

231223212002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 225614550121 + 5608661881 = 474989^2 + 74891^2 .

It is not an unprimeable number, because it can be changed into a prime (231223212007) 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, 973727 + ... + 1187682.

Almost surely, 2^231223212002 is an apocalyptic number.

231223212002 is a deficient number, since it is larger than the sum of its proper divisors (120092369398).

231223212002 is a wasteful number, since it uses less digits than its factorization.

231223212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162101.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 231223212002 its reverse (200212322132), we get a palindrome (431435534134).

The spelling of 231223212002 in words is "two hundred thirty-one billion, two hundred twenty-three million, two hundred twelve thousand, two".