1231103330020 has 48 divisors (see below), whose sum is σ = 2697885066240. Its totient is φ = 471002381696.

The previous prime is 1231103330011. The next prime is 1231103330059. The reversal of 1231103330020 is 200333011321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231103330020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8539254 + ... + 8682226.

It is an arithmetic number, because the mean of its divisors is an integer number (56205938880).

Almost surely, 2^{1231103330020} is an apocalyptic number.

1231103330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231103330020 is an abundant number, since it is smaller than the sum of its proper divisors (1466781736220).

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

1231103330020 is a wasteful number, since it uses less digits than its factorization.

1231103330020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161724 (or 161722 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1231103330020 its reverse (200333011321), we get a palindrome (1431436341341).

The spelling of 1231103330020 in words is "one trillion, two hundred thirty-one billion, one hundred three million, three hundred thirty thousand, twenty".