1231223101320 has 64 divisors (see below), whose sum is σ = 3708385208640. Its totient is φ = 327018080000.

The previous prime is 1231223101289. The next prime is 1231223101343. The reversal of 1231223101320 is 231013221321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20408511 + ... + 20468750.

It is an arithmetic number, because the mean of its divisors is an integer number (57943518885).

Almost surely, 2^{1231223101320} is an apocalyptic number.

1231223101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231223101320 is an abundant number, since it is smaller than the sum of its proper divisors (2477162107320).

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

1231223101320 is a wasteful number, since it uses less digits than its factorization.

1231223101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40877526 (or 40877522 counting only the distinct ones).

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

Adding to 1231223101320 its reverse (231013221321), we get a palindrome (1462236322641).

The spelling of 1231223101320 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-three million, one hundred one thousand, three hundred twenty".