1331400444100 has 36 divisors (see below), whose sum is σ = 2889466718544. Its totient is φ = 532499762080.

The previous prime is 1331400444097. The next prime is 1331400444197. The reversal of 1331400444100 is 14440041331.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 135939 + ... + 1637461.

It is an arithmetic number, because the mean of its divisors is an integer number (80262964404).

Almost surely, 2^{1331400444100} is an apocalyptic number.

1331400444100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331400444100 is an abundant number, since it is smaller than the sum of its proper divisors (1558066274444).

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

1331400444100 is a wasteful number, since it uses less digits than its factorization.

1331400444100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510404 (or 1510397 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1331400444100 its reverse (14440041331), we get a palindrome (1345840485431).

The spelling of 1331400444100 in words is "one trillion, three hundred thirty-one billion, four hundred million, four hundred forty-four thousand, one hundred".