20002232131 has 6 divisors (see below), whose sum is σ = 23267902740. Its totient is φ = 17144770356.

The previous prime is 20002232123. The next prime is 20002232219. The reversal of 20002232131 is 13123220002.

It is not a de Polignac number, because 20002232131 - 2³ = 20002232123 is a prime.

It is a super-2 number, since 2×20002232131² (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 (20002232111) 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 5 ways as a sum of consecutive naturals, for example, 204104361 + ... + 204104458.

It is an arithmetic number, because the mean of its divisors is an integer number (3877983790).

Almost surely, 2^20002232131 is an apocalyptic number.

20002232131 is a deficient number, since it is larger than the sum of its proper divisors (3265670609).

20002232131 is an equidigital number, since it uses as much as digits as its factorization.

20002232131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408208833 (or 408208826 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20002232131 its reverse (13123220002), we get a palindrome (33125452133).

The spelling of 20002232131 in words is "twenty billion, two million, two hundred thirty-two thousand, one hundred thirty-one".