20312303 has 8 divisors (see below), whose sum is σ = 22577616. Its totient is φ = 18116800.

The previous prime is 20312293. The next prime is 20312309. The reversal of 20312303 is 30321302.

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

It is a cyclic number.

It is not a de Polignac number, because 20312303 - 2⁶ = 20312239 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 (20312309) 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, 16838 + ... + 18003.

It is an arithmetic number, because the mean of its divisors is an integer number (2822202).

Almost surely, 2^20312303 is an apocalyptic number.

20312303 is a deficient number, since it is larger than the sum of its proper divisors (2265313).

20312303 is a wasteful number, since it uses less digits than its factorization.

20312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34905.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 20312303 is about 4506.9172390893. The cubic root of 20312303 is about 272.8473386931.

Adding to 20312303 its reverse (30321302), we get a palindrome (50633605).

It can be divided in two parts, 2031 and 2303, that added together give a palindrome (4334).

The spelling of 20312303 in words is "twenty million, three hundred twelve thousand, three hundred three".