215231453200 has 30 divisors (see below), whose sum is σ = 517093567274. Its totient is φ = 86092581120.

The previous prime is 215231453197. The next prime is 215231453201. The reversal of 215231453200 is 2354132512.

It can be written as a sum of positive squares in 3 ways, for example, as 6890328064 + 208341125136 = 83008^2 + 456444^2 .

It is not an unprimeable number, because it can be changed into a prime (215231453201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269038917 + ... + 269039716.

Almost surely, 2^215231453200 is an apocalyptic number.

215231453200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215231453200 is an abundant number, since it is smaller than the sum of its proper divisors (301862114074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215231453200 is a wasteful number, since it uses less digits than its factorization.

215231453200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538078651 (or 538078640 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 215231453200 its reverse (2354132512), we get a palindrome (217585585712).

The spelling of 215231453200 in words is "two hundred fifteen billion, two hundred thirty-one million, four hundred fifty-three thousand, two hundred".