231400423223420 has 24 divisors (see below), whose sum is σ = 530117333203248. Its totient is φ = 84145608444800.

The previous prime is 231400423223407. The next prime is 231400423223461. The reversal of 231400423223420 is 24322324004132.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 525910052561 + ... + 525910053000.

It is an arithmetic number, because the mean of its divisors is an integer number (22088222216802).

Almost surely, 2^{231400423223420} is an apocalyptic number.

231400423223420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231400423223420 is an abundant number, since it is smaller than the sum of its proper divisors (298716909979828).

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

231400423223420 is a wasteful number, since it uses less digits than its factorization.

231400423223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051820105581 (or 1051820105579 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 231400423223420 its reverse (24322324004132), we get a palindrome (255722747227552).

The spelling of 231400423223420 in words is "two hundred thirty-one trillion, four hundred billion, four hundred twenty-three million, two hundred twenty-three thousand, four hundred twenty".