231202021031330 has 16 divisors (see below), whose sum is σ = 424015781967864. Its totient is φ = 90735887498880.

The previous prime is 231202021031323. The next prime is 231202021031393. The reversal of 231202021031330 is 33130120202132.

It can be written as a sum of positive squares in 4 ways, for example, as 166574618891641 + 64627402139689 = 12906379^2 + 8039117^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231202021031296 and 231202021031305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218115113651 + ... + 218115114710.

Almost surely, 2^{231202021031330} is an apocalyptic number.

231202021031330 is a deficient number, since it is larger than the sum of its proper divisors (192813760936534).

231202021031330 is a wasteful number, since it uses less digits than its factorization.

231202021031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436230228421.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231202021031330 its reverse (33130120202132), we get a palindrome (264332141233462).

The spelling of 231202021031330 in words is "two hundred thirty-one trillion, two hundred two billion, twenty-one million, thirty-one thousand, three hundred thirty".