201430402321 has 4 divisors (see below), whose sum is σ = 201450358000. Its totient is φ = 201410446644.

The previous prime is 201430402307. The next prime is 201430402333. The reversal of 201430402321 is 123204034102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201430402321 - 2²⁵ = 201396847889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201430402292 and 201430402301.

It is not an unprimeable number, because it can be changed into a prime (201430402361) 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, 9962691 + ... + 9982888.

It is an arithmetic number, because the mean of its divisors is an integer number (50362589500).

Almost surely, 2^201430402321 is an apocalyptic number.

It is an amenable number.

201430402321 is a deficient number, since it is larger than the sum of its proper divisors (19955679).

201430402321 is a wasteful number, since it uses less digits than its factorization.

201430402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19955678.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 201430402321 its reverse (123204034102), we get a palindrome (324634436423).

The spelling of 201430402321 in words is "two hundred one billion, four hundred thirty million, four hundred two thousand, three hundred twenty-one".