201351401 has 4 divisors (see below), whose sum is σ = 202634052. Its totient is φ = 200068752.

The previous prime is 201351389. The next prime is 201351419. The reversal of 201351401 is 104153102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104153102 = 2 ⋅52076551.

It can be written as a sum of positive squares in 2 ways, for example, as 95570176 + 105781225 = 9776^2 + 10285^2 .

It is a cyclic number.

It is not a de Polignac number, because 201351401 - 2¹⁸ = 201089257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201351401.

It is not an unprimeable number, because it can be changed into a prime (201351481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641090 + ... + 641403.

It is an arithmetic number, because the mean of its divisors is an integer number (50658513).

Almost surely, 2^201351401 is an apocalyptic number.

It is an amenable number.

201351401 is a deficient number, since it is larger than the sum of its proper divisors (1282651).

201351401 is a wasteful number, since it uses less digits than its factorization.

201351401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282650.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 201351401 is about 14189.8344246859. The cubic root of 201351401 is about 586.1177655119.

The spelling of 201351401 in words is "two hundred one million, three hundred fifty-one thousand, four hundred one".