231223021020000 has 180 divisors, whose sum is σ = 821662566985260. Its totient is φ = 61659472224000.

The previous prime is 231223021019981. The next prime is 231223021020037. The reversal of 231223021020000 is 20120322132.

231223021020000 is a `hidden beast` number, since 2 + 31 + 223 + 0 + 210 + 200 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 642106170 + ... + 642466169.

It is an arithmetic number, because the mean of its divisors is an integer number (4564792038807).

Almost surely, 2^{231223021020000} is an apocalyptic number.

231223021020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231223021020000 is an abundant number, since it is smaller than the sum of its proper divisors (590439545965260).

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

231223021020000 is a wasteful number, since it uses less digits than its factorization.

231223021020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284572375 (or 1284572349 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 231223021020000 its reverse (20120322132), we get a palindrome (231243141342132).

The spelling of 231223021020000 in words is "two hundred thirty-one trillion, two hundred twenty-three billion, twenty-one million, twenty thousand".