1321314031100 has 36 divisors (see below), whose sum is σ = 3276858798864. Its totient is φ = 453021953280.

The previous prime is 1321314031027. The next prime is 1321314031123. The reversal of 1321314031100 is 11304131231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943795037 + ... + 943796436.

It is an arithmetic number, because the mean of its divisors is an integer number (91023855524).

Almost surely, 2^{1321314031100} is an apocalyptic number.

1321314031100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321314031100 is an abundant number, since it is smaller than the sum of its proper divisors (1955544767764).

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

1321314031100 is a wasteful number, since it uses less digits than its factorization.

1321314031100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887591494 (or 1887591487 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1321314031100 its reverse (11304131231), we get a palindrome (1332618162331).

The spelling of 1321314031100 in words is "one trillion, three hundred twenty-one billion, three hundred fourteen million, thirty-one thousand, one hundred".