20040202231 has 12 divisors (see below), whose sum is σ = 23552408208. Its totient is φ = 17000226432.

The previous prime is 20040202213. The next prime is 20040202241. The reversal of 20040202231 is 13220204002.

It is not a de Polignac number, because 20040202231 - 2¹¹ = 20040200183 is a prime.

It is a super-2 number, since 2×20040202231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040202241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2103411 + ... + 2112916.

It is an arithmetic number, because the mean of its divisors is an integer number (1962700684).

Almost surely, 2^20040202231 is an apocalyptic number.

20040202231 is a deficient number, since it is larger than the sum of its proper divisors (3512205977).

20040202231 is an equidigital number, since it uses as much as digits as its factorization.

20040202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216438 (or 4216431 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20040202231 its reverse (13220204002), we get a palindrome (33260406233).

The spelling of 20040202231 in words is "twenty billion, forty million, two hundred two thousand, two hundred thirty-one".