20303302253 has 8 divisors (see below), whose sum is σ = 22235690400. Its totient is φ = 18423856368.

The previous prime is 20303302241. The next prime is 20303302289. The reversal of 20303302253 is 35220330302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20303302253 - 2¹² = 20303298157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303302153) 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, 13234763 + ... + 13236296.

It is an arithmetic number, because the mean of its divisors is an integer number (2779461300).

Almost surely, 2^20303302253 is an apocalyptic number.

It is an amenable number.

20303302253 is a deficient number, since it is larger than the sum of its proper divisors (1932388147).

20303302253 is a wasteful number, since it uses less digits than its factorization.

20303302253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26471131.

The product of its (nonzero) digits is 3240, while the sum is 23.

Adding to 20303302253 its reverse (35220330302), we get a palindrome (55523632555).

The spelling of 20303302253 in words is "twenty billion, three hundred three million, three hundred two thousand, two hundred fifty-three".