1320231655350 has 72 divisors (see below), whose sum is σ = 3547166934792. Its totient is φ = 352047427200.

The previous prime is 1320231655313. The next prime is 1320231655367. The reversal of 1320231655350 is 535561320231.

1320231655350 is a `hidden beast` number, since 1 + 3 + 20 + 2 + 31 + 6 + 553 + 50 = 666.

It is a Curzon number.

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 35 ways as a sum of consecutive naturals, for example, 15474810 + ... + 15559890.

Almost surely, 2^{1320231655350} is an apocalyptic number.

1320231655350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320231655350 is an abundant number, since it is smaller than the sum of its proper divisors (2226935279442).

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

1320231655350 is a wasteful number, since it uses less digits than its factorization.

1320231655350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119582 (or 119574 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 1320231655350 its reverse (535561320231), we get a palindrome (1855792975581).

The spelling of 1320231655350 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, six hundred fifty-five thousand, three hundred fifty".