1215523230 has 64 divisors (see below), whose sum is σ = 2963865600. Its totient is φ = 318988800.

The previous prime is 1215523189. The next prime is 1215523241. The reversal of 1215523230 is 323255121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215523230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949731 + ... + 951009.

It is an arithmetic number, because the mean of its divisors is an integer number (46310400).

Almost surely, 2^1215523230 is an apocalyptic number.

1215523230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215523230 is an abundant number, since it is smaller than the sum of its proper divisors (1748342370).

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

1215523230 is a wasteful number, since it uses less digits than its factorization.

1215523230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1215523230 is about 34864.3547193979. The cubic root of 1215523230 is about 1067.2211441203.

Adding to 1215523230 its reverse (323255121), we get a palindrome (1538778351).

The spelling of 1215523230 in words is "one billion, two hundred fifteen million, five hundred twenty-three thousand, two hundred thirty".