215231030 has 48 divisors (see below), whose sum is σ = 453450960. Its totient is φ = 73338048.

The previous prime is 215230991. The next prime is 215231041. The reversal of 215231030 is 30132512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83501 + ... + 86039.

It is an arithmetic number, because the mean of its divisors is an integer number (9446895).

Almost surely, 2^215231030 is an apocalyptic number.

215231030 is an abundant number, since it is smaller than the sum of its proper divisors (238219930).

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

215231030 is a wasteful number, since it uses less digits than its factorization.

215231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 215231030 is about 14670.7542410062. The cubic root of 215231030 is about 599.2871441370.

Adding to 215231030 its reverse (30132512), we get a palindrome (245363542).

The spelling of 215231030 in words is "two hundred fifteen million, two hundred thirty-one thousand, thirty".