20203302131 has 4 divisors (see below), whose sum is σ = 20211747192. Its totient is φ = 20194857072.

The previous prime is 20203302109. The next prime is 20203302149. The reversal of 20203302131 is 13120330202.

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

It is a cyclic number.

It is not a de Polignac number, because 20203302131 - 2²⁶ = 20136193267 is a prime.

It is a super-2 number, since 2×20203302131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203302151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4218941 + ... + 4223726.

It is an arithmetic number, because the mean of its divisors is an integer number (5052936798).

Almost surely, 2^20203302131 is an apocalyptic number.

20203302131 is a deficient number, since it is larger than the sum of its proper divisors (8445061).

20203302131 is an equidigital number, since it uses as much as digits as its factorization.

20203302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8445060.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20203302131 its reverse (13120330202), we get a palindrome (33323632333).

The spelling of 20203302131 in words is "twenty billion, two hundred three million, three hundred two thousand, one hundred thirty-one".