201312421 has 8 divisors (see below), whose sum is σ = 208667520. Its totient is φ = 194085408.

The previous prime is 201312413. The next prime is 201312431. The reversal of 201312421 is 124213102.

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

It is a cyclic number.

It is not a de Polignac number, because 201312421 - 2³ = 201312413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201312395 and 201312404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201312401) 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, 28816 + ... + 35113.

It is an arithmetic number, because the mean of its divisors is an integer number (26083440).

Almost surely, 2^201312421 is an apocalyptic number.

It is an amenable number.

201312421 is a deficient number, since it is larger than the sum of its proper divisors (7355099).

201312421 is an equidigital number, since it uses as much as digits as its factorization.

201312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64043.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 201312421 is about 14188.4608397106. The cubic root of 201312421 is about 586.0799405206.

Adding to 201312421 its reverse (124213102), we get a palindrome (325525523).

The spelling of 201312421 in words is "two hundred one million, three hundred twelve thousand, four hundred twenty-one".