20212523303 has 24 divisors (see below), whose sum is σ = 25605745152. Its totient is φ = 15596913024.

The previous prime is 20212523299. The next prime is 20212523321. The reversal of 20212523303 is 30332521202.

It is not a de Polignac number, because 20212523303 - 2² = 20212523299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212522303) 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, 170675 + ... + 263732.

It is an arithmetic number, because the mean of its divisors is an integer number (1066906048).

Almost surely, 2^20212523303 is an apocalyptic number.

20212523303 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20212523303 is a deficient number, since it is larger than the sum of its proper divisors (5393221849).

20212523303 is a wasteful number, since it uses less digits than its factorization.

20212523303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434471 (or 434454 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The spelling of 20212523303 in words is "twenty billion, two hundred twelve million, five hundred twenty-three thousand, three hundred three".