20530403031 has 8 divisors (see below), whose sum is σ = 27526798080. Its totient is φ = 13610471672.

The previous prime is 20530402987. The next prime is 20530403087. The reversal of 20530403031 is 13030403502.

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 20530403031 - 2¹¹ = 20530400983 is a prime.

It is a super-2 number, since 2×20530403031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20530402989 and 20530403007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530407031) 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, 19115295 + ... + 19116368.

It is an arithmetic number, because the mean of its divisors is an integer number (3440849760).

Almost surely, 2^20530403031 is an apocalyptic number.

20530403031 is a deficient number, since it is larger than the sum of its proper divisors (6996395049).

20530403031 is a wasteful number, since it uses less digits than its factorization.

20530403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38231845.

The product of its (nonzero) digits is 1080, while the sum is 21.

Adding to 20530403031 its reverse (13030403502), we get a palindrome (33560806533).

The spelling of 20530403031 in words is "twenty billion, five hundred thirty million, four hundred three thousand, thirty-one".