201310111420 has 576 divisors, whose sum is σ = 545434767360. Its totient is φ = 61659136000.

The previous prime is 201310111411. The next prime is 201310111439. The reversal of 201310111420 is 24111013102.

It is a junction number, because it is equal to n+sod(n) for n = 201310111394 and 201310111403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1993169370 + ... + 1993169470.

It is an arithmetic number, because the mean of its divisors is an integer number (946935360).

Almost surely, 2^201310111420 is an apocalyptic number.

201310111420 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 201310111420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272717383680).

201310111420 is an abundant number, since it is smaller than the sum of its proper divisors (344124655940).

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

201310111420 is a wasteful number, since it uses less digits than its factorization.

201310111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201310111420 its reverse (24111013102), we get a palindrome (225421124522).

The spelling of 201310111420 in words is "two hundred one billion, three hundred ten million, one hundred eleven thousand, four hundred twenty".