1012311320100 has 72 divisors (see below), whose sum is σ = 3029952528960. Its totient is φ = 260641073280.

The previous prime is 1012311320093. The next prime is 1012311320201. The reversal of 1012311320100 is 10231132101.

It is a happy number.

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 1012311320100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58170112 + ... + 58187511.

Almost surely, 2^{1012311320100} is an apocalyptic number.

1012311320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012311320100 is an abundant number, since it is smaller than the sum of its proper divisors (2017641208860).

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

1012311320100 is a wasteful number, since it uses less digits than its factorization.

1012311320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116357669 (or 116357662 counting only the distinct ones).

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

Adding to 1012311320100 its reverse (10231132101), we get a palindrome (1022542452201).

The spelling of 1012311320100 in words is "one trillion, twelve billion, three hundred eleven million, three hundred twenty thousand, one hundred".