201311424 has 42 divisors (see below), whose sum is σ = 577024500. Its totient is φ = 67103616.

The previous prime is 201311419. The next prime is 201311449. The reversal of 201311424 is 424113102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201311397 and 201311406.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 174174 + ... + 175325.

Almost surely, 2^201311424 is an apocalyptic number.

201311424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201311424 is an abundant number, since it is smaller than the sum of its proper divisors (375713076).

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

201311424 is a wasteful number, since it uses less digits than its factorization.

201311424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349517 (or 349504 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 201311424 is about 14188.4257054826. The cubic root of 201311424 is about 586.0789729985.

Adding to 201311424 its reverse (424113102), we get a palindrome (625424526).

The spelling of 201311424 in words is "two hundred one million, three hundred eleven thousand, four hundred twenty-four".