20303213123223 has 24 divisors (see below), whose sum is σ = 30240202919472. Its totient is φ = 13120087987968.

The previous prime is 20303213123131. The next prime is 20303213123243. The reversal of 20303213123223 is 32232131230302.

20303213123223 is a `hidden beast` number, since 2 + 0 + 3 + 0 + 3 + 21 + 312 + 322 + 3 = 666.

It is not a de Polignac number, because 20303213123223 - 2⁸ = 20303213122967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303213123243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256372386 + ... + 256451567.

It is an arithmetic number, because the mean of its divisors is an integer number (1260008454978).

Almost surely, 2^{20303213123223} is an apocalyptic number.

20303213123223 is a deficient number, since it is larger than the sum of its proper divisors (9936989796249).

20303213123223 is a wasteful number, since it uses less digits than its factorization.

20303213123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512824095 (or 512824092 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 20303213123223 its reverse (32232131230302), we get a palindrome (52535344353525).

The spelling of 20303213123223 in words is "twenty trillion, three hundred three billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred twenty-three".