201231401 has 8 divisors (see below), whose sum is σ = 230391744. Its totient is φ = 172174320.

The previous prime is 201231391. The next prime is 201231427. The reversal of 201231401 is 104132102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201231401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201231001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21590 + ... + 29471.

It is an arithmetic number, because the mean of its divisors is an integer number (28798968).

Almost surely, 2^201231401 is an apocalyptic number.

It is an amenable number.

201231401 is a deficient number, since it is larger than the sum of its proper divisors (29160343).

201231401 is an equidigital number, since it uses as much as digits as its factorization.

201231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51631.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201231401 is about 14185.6054153497. The cubic root of 201231401 is about 586.0013055840.

Adding to 201231401 its reverse (104132102), we get a palindrome (305363503).

The spelling of 201231401 in words is "two hundred one million, two hundred thirty-one thousand, four hundred one".