1311200110320 has 40 divisors (see below), whose sum is σ = 4064720342736. Its totient is φ = 349653362688.

The previous prime is 1311200110309. The next prime is 1311200110321. The reversal of 1311200110320 is 230110021131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1311200110320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311200110321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2731666657 + ... + 2731667136.

Almost surely, 2^{1311200110320} is an apocalyptic number.

1311200110320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311200110320 is an abundant number, since it is smaller than the sum of its proper divisors (2753520232416).

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

1311200110320 is a wasteful number, since it uses less digits than its factorization.

1311200110320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463333809 (or 5463333803 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1311200110320 its reverse (230110021131), we get a palindrome (1541310131451).

The spelling of 1311200110320 in words is "one trillion, three hundred eleven billion, two hundred million, one hundred ten thousand, three hundred twenty".