1215344223 has 32 divisors (see below), whose sum is σ = 1842244800. Its totient is φ = 791659008.

The previous prime is 1215344213. The next prime is 1215344231. The reversal of 1215344223 is 3224435121.

1215344223 is a `hidden beast` number, since 1 + 215 + 3 + 442 + 2 + 3 = 666.

1215344223 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1215344223 - 2¹⁷ = 1215213151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215344213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212011 + ... + 217667.

It is an arithmetic number, because the mean of its divisors is an integer number (57570150).

Almost surely, 2^1215344223 is an apocalyptic number.

1215344223 is a deficient number, since it is larger than the sum of its proper divisors (626900577).

1215344223 is a wasteful number, since it uses less digits than its factorization.

1215344223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848 (or 5842 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1215344223 is about 34861.7874326604. The cubic root of 1215344223 is about 1067.1687525714.

Adding to 1215344223 its reverse (3224435121), we get a palindrome (4439779344).

The spelling of 1215344223 in words is "one billion, two hundred fifteen million, three hundred forty-four thousand, two hundred twenty-three".