131223121023000 has 128 divisors (see below), whose sum is σ = 433499439971520. Its totient is φ = 32934430361600.

The previous prime is 131223121022971. The next prime is 131223121023019. The reversal of 131223121023000 is 320121322131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1286450187 + ... + 1286552186.

Almost surely, 2^{131223121023000} is an apocalyptic number.

131223121023000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223121023000 is an abundant number, since it is smaller than the sum of its proper divisors (302276318948520).

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

131223121023000 is a wasteful number, since it uses less digits than its factorization.

131223121023000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573002414 (or 2573002400 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131223121023000 its reverse (320121322131), we get a palindrome (131543242345131).

The spelling of 131223121023000 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, one hundred twenty-one million, twenty-three thousand".