1000320311100 has 72 divisors (see below), whose sum is σ = 3157374665088. Its totient is φ = 242501892800.

The previous prime is 1000320311017. The next prime is 1000320311147. The reversal of 1000320311100 is 11130230001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 151560384 + ... + 151566983.

It is an arithmetic number, because the mean of its divisors is an integer number (43852425904).

Almost surely, 2^{1000320311100} is an apocalyptic number.

1000320311100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000320311100 is an abundant number, since it is smaller than the sum of its proper divisors (2157054353988).

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

1000320311100 is a wasteful number, since it uses less digits than its factorization.

1000320311100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303127395 (or 303127388 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 1000320311100 its reverse (11130230001), we get a palindrome (1011450541101).

The spelling of 1000320311100 in words is "one trillion, three hundred twenty million, three hundred eleven thousand, one hundred".