20312072603 has 8 divisors (see below), whose sum is σ = 20746561200. Its totient is φ = 19880591328.

The previous prime is 20312072563. The next prime is 20312072611. The reversal of 20312072603 is 30627021302.

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 20312072603 - 2²⁴ = 20295295387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312071603) 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, 738176 + ... + 765197.

It is an arithmetic number, because the mean of its divisors is an integer number (2593320150).

Almost surely, 2^20312072603 is an apocalyptic number.

20312072603 is a deficient number, since it is larger than the sum of its proper divisors (434488597).

20312072603 is a wasteful number, since it uses less digits than its factorization.

20312072603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503661.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 20312072603 its reverse (30627021302), we get a palindrome (50939093905).

The spelling of 20312072603 in words is "twenty billion, three hundred twelve million, seventy-two thousand, six hundred three".