201430857 has 8 divisors (see below), whose sum is σ = 268787680. Its totient is φ = 134180640.

The previous prime is 201430787. The next prime is 201430921. The reversal of 201430857 is 758034102.

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

It is not a de Polignac number, because 201430857 - 2⁷ = 201430729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201480857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22132 + ... + 29877.

It is an arithmetic number, because the mean of its divisors is an integer number (33598460).

Almost surely, 2^201430857 is an apocalyptic number.

It is an amenable number.

201430857 is a deficient number, since it is larger than the sum of its proper divisors (67356823).

201430857 is a wasteful number, since it uses less digits than its factorization.

201430857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53303.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 201430857 is about 14192.6338993155. The cubic root of 201430857 is about 586.1948520523.

Adding to 201430857 its reverse (758034102), we get a palindrome (959464959).

The spelling of 201430857 in words is "two hundred one million, four hundred thirty thousand, eight hundred fifty-seven".