231202400424020 has 24 divisors (see below), whose sum is σ = 485540843432064. Its totient is φ = 92477950161696.

The previous prime is 231202400423971. The next prime is 231202400424029. The reversal of 231202400424020 is 20424004202132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231202400424029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187495592 + ... + 188724671.

It is an arithmetic number, because the mean of its divisors is an integer number (20230868476336).

Almost surely, 2^{231202400424020} is an apocalyptic number.

231202400424020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231202400424020 is an abundant number, since it is smaller than the sum of its proper divisors (254338443008044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231202400424020 is a wasteful number, since it uses less digits than its factorization.

231202400424020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376250999 (or 376250997 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 231202400424020 its reverse (20424004202132), we get a palindrome (251626404626152).

The spelling of 231202400424020 in words is "two hundred thirty-one trillion, two hundred two billion, four hundred million, four hundred twenty-four thousand, twenty".