20603852131 has 4 divisors (see below), whose sum is σ = 20992604112. Its totient is φ = 20215100152.

The previous prime is 20603852119. The next prime is 20603852141. The reversal of 20603852131 is 13125830602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20603852131 - 2²⁷ = 20469634403 is a prime.

It is a super-2 number, since 2×20603852131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20603852093 and 20603852102.

It is not an unprimeable number, because it can be changed into a prime (20603852141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194375911 + ... + 194376016.

It is an arithmetic number, because the mean of its divisors is an integer number (5248151028).

Almost surely, 2^20603852131 is an apocalyptic number.

20603852131 is a deficient number, since it is larger than the sum of its proper divisors (388751981).

20603852131 is an equidigital number, since it uses as much as digits as its factorization.

20603852131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388751980.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 20603852131 in words is "twenty billion, six hundred three million, eight hundred fifty-two thousand, one hundred thirty-one".