201311033020 has 12 divisors (see below), whose sum is σ = 422753169384. Its totient is φ = 80524413200.

The previous prime is 201311032987. The next prime is 201311033081. The reversal of 201311033020 is 20330113102.

It is a super-2 number, since 2×201311033020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201311032985 and 201311033003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5032775806 + ... + 5032775845.

It is an arithmetic number, because the mean of its divisors is an integer number (35229430782).

Almost surely, 2^201311033020 is an apocalyptic number.

201311033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201311033020 is an abundant number, since it is smaller than the sum of its proper divisors (221442136364).

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

201311033020 is a wasteful number, since it uses less digits than its factorization.

201311033020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065551660 (or 10065551658 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 201311033020 its reverse (20330113102), we get a palindrome (221641146122).

The spelling of 201311033020 in words is "two hundred one billion, three hundred eleven million, thirty-three thousand, twenty".