215343801 has 12 divisors (see below), whose sum is σ = 317670912. Its totient is φ = 140507736.

The previous prime is 215343797. The next prime is 215343833. The reversal of 215343801 is 108343512.

It is a happy number.

It is not a de Polignac number, because 215343801 - 2² = 215343797 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215343841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254121 + ... + 254966.

It is an arithmetic number, because the mean of its divisors is an integer number (26472576).

Almost surely, 2^215343801 is an apocalyptic number.

It is an amenable number.

215343801 is a deficient number, since it is larger than the sum of its proper divisors (102327111).

215343801 is a wasteful number, since it uses less digits than its factorization.

215343801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509140 (or 509137 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 215343801 is about 14674.5971324599. The cubic root of 215343801 is about 599.3917920134.

It can be divided in two parts, 2153 and 43801, that added together give a palindrome (45954).

The spelling of 215343801 in words is "two hundred fifteen million, three hundred forty-three thousand, eight hundred one".