201301231311020 has 24 divisors (see below), whose sum is σ = 422745738725184. Its totient is φ = 80517987196416.

The previous prime is 201301231310981. The next prime is 201301231311049. The reversal of 201301231311020 is 20113132103102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 201301231310983 and 201301231311001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155924069 + ... + 157209788.

It is an arithmetic number, because the mean of its divisors is an integer number (17614405780216).

Almost surely, 2^{201301231311020} is an apocalyptic number.

201301231311020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201301231311020 is an abundant number, since it is smaller than the sum of its proper divisors (221444507414164).

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

201301231311020 is a wasteful number, since it uses less digits than its factorization.

201301231311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313166009 (or 313166007 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 201301231311020 its reverse (20113132103102), we get a palindrome (221414363414122).

The spelling of 201301231311020 in words is "two hundred one trillion, three hundred one billion, two hundred thirty-one million, three hundred eleven thousand, twenty".