1321310980188 has 36 divisors (see below), whose sum is σ = 3341710372728. Its totient is φ = 440208882720.

The previous prime is 1321310980159. The next prime is 1321310980193. The reversal of 1321310980188 is 8810890131231.

1321310980188 is a `hidden beast` number, since 1 + 321 + 310 + 9 + 8 + 0 + 1 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9434131 + ... + 9573162.

Almost surely, 2^{1321310980188} is an apocalyptic number.

1321310980188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1321310980188 is an abundant number, since it is smaller than the sum of its proper divisors (2020399392540).

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

1321310980188 is a wasteful number, since it uses less digits than its factorization.

1321310980188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19009234 (or 19009229 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 1321310980188 in words is "one trillion, three hundred twenty-one billion, three hundred ten million, nine hundred eighty thousand, one hundred eighty-eight".