20213103303 has 24 divisors (see below), whose sum is σ = 29687729136. Its totient is φ = 13249526400.

The previous prime is 20213103257. The next prime is 20213103307. The reversal of 20213103303 is 30330131202.

20213103303 is a `hidden beast` number, since 2 + 0 + 21 + 310 + 330 + 3 = 666.

It is not a de Polignac number, because 20213103303 - 2⁸ = 20213103047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213103307) 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, 295243 + ... + 357203.

It is an arithmetic number, because the mean of its divisors is an integer number (1236988714).

Almost surely, 2^20213103303 is an apocalyptic number.

20213103303 is a deficient number, since it is larger than the sum of its proper divisors (9474625833).

20213103303 is a wasteful number, since it uses less digits than its factorization.

20213103303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62575 (or 62572 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20213103303 its reverse (30330131202), we get a palindrome (50543234505).

The spelling of 20213103303 in words is "twenty billion, two hundred thirteen million, one hundred three thousand, three hundred three".