1231103300100 has 72 divisors (see below), whose sum is σ = 3612161181888. Its totient is φ = 323670345600.

The previous prime is 1231103300059. The next prime is 1231103300129. The reversal of 1231103300100 is 10033011321.

It is a super-2 number, since 2×1231103300100² (a number of 25 digits) contains 22 as substring.

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 1231103300100.

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, 28877839 + ... + 28920438.

It is an arithmetic number, because the mean of its divisors is an integer number (50168905304).

Almost surely, 2^{1231103300100} is an apocalyptic number.

1231103300100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231103300100 is an abundant number, since it is smaller than the sum of its proper divisors (2381057881788).

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

1231103300100 is a wasteful number, since it uses less digits than its factorization.

1231103300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57798365 (or 57798358 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 1231103300100 its reverse (10033011321), we get a palindrome (1241136311421).

The spelling of 1231103300100 in words is "one trillion, two hundred thirty-one billion, one hundred three million, three hundred thousand, one hundred".