215313983228 has 12 divisors (see below), whose sum is σ = 386983240392. Its totient is φ = 104747343120.

The previous prime is 215313983221. The next prime is 215313983239. The reversal of 215313983228 is 822389313512.

It is a super-2 number, since 2×215313983228² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215313983221) 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, 727411958 + ... + 727412253.

It is an arithmetic number, because the mean of its divisors is an integer number (32248603366).

Almost surely, 2^215313983228 is an apocalyptic number.

It is an amenable number.

215313983228 is a deficient number, since it is larger than the sum of its proper divisors (171669257164).

215313983228 is a wasteful number, since it uses less digits than its factorization.

215313983228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454824252 (or 1454824250 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The spelling of 215313983228 in words is "two hundred fifteen billion, three hundred thirteen million, nine hundred eighty-three thousand, two hundred twenty-eight".