1215423330 has 64 divisors (see below), whose sum is σ = 3369403008. Its totient is φ = 277314560.

The previous prime is 1215423329. The next prime is 1215423361. The reversal of 1215423330 is 333245121.

It is a super-2 number, since 2×1215423330² = 2954507742216577800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215423330.

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, 102717 + ... + 113936.

It is an arithmetic number, because the mean of its divisors is an integer number (52646922).

Almost surely, 2^1215423330 is an apocalyptic number.

1215423330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215423330 is an abundant number, since it is smaller than the sum of its proper divisors (2153979678).

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

1215423330 is a wasteful number, since it uses less digits than its factorization.

1215423330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216691.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1215423330 is about 34862.9219945776. The cubic root of 1215423330 is about 1067.1919061454.

Adding to 1215423330 its reverse (333245121), we get a palindrome (1548668451).

The spelling of 1215423330 in words is "one billion, two hundred fifteen million, four hundred twenty-three thousand, three hundred thirty".