20316903 has 8 divisors (see below), whose sum is σ = 27149568. Its totient is φ = 13514424.

The previous prime is 20316893. The next prime is 20316911. The reversal of 20316903 is 30961302.

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

It is not a de Polignac number, because 20316903 - 2⁹ = 20316391 is a prime.

It is a super-2 number, since 2×20316903² = 825553095022818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316943) 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, 5925 + ... + 8702.

It is an arithmetic number, because the mean of its divisors is an integer number (3393696).

Almost surely, 2^20316903 is an apocalyptic number.

20316903 is a deficient number, since it is larger than the sum of its proper divisors (6832665).

20316903 is a wasteful number, since it uses less digits than its factorization.

20316903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15093.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 20316903 is about 4507.4275368551. The cubic root of 20316903 is about 272.8679338143.

The spelling of 20316903 in words is "twenty million, three hundred sixteen thousand, nine hundred three".