201312020 has 96 divisors (see below), whose sum is σ = 530385408. Its totient is φ = 62479872.

The previous prime is 201311993. The next prime is 201312061. The reversal of 201312020 is 20213102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201311992 and 201312010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95417 + ... + 97503.

It is an arithmetic number, because the mean of its divisors is an integer number (5524848).

Almost surely, 2^201312020 is an apocalyptic number.

201312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201312020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265192704).

201312020 is an abundant number, since it is smaller than the sum of its proper divisors (329073388).

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

201312020 is a wasteful number, since it uses less digits than its factorization.

201312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 201312020 is about 14188.4467085020. The cubic root of 201312020 is about 586.0795513772.

Adding to 201312020 its reverse (20213102), we get a palindrome (221525122).

The spelling of 201312020 in words is "two hundred one million, three hundred twelve thousand, twenty".