1215412023 has 24 divisors (see below), whose sum is σ = 1967096448. Its totient is φ = 664322736.

The previous prime is 1215411997. The next prime is 1215412027. The reversal of 1215412023 is 3202145121.

It is not a de Polignac number, because 1215412023 - 2¹⁸ = 1215149879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215412027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176361 + ... + 183122.

It is an arithmetic number, because the mean of its divisors is an integer number (81962352).

Almost surely, 2^1215412023 is an apocalyptic number.

1215412023 is a deficient number, since it is larger than the sum of its proper divisors (751684425).

1215412023 is a wasteful number, since it uses less digits than its factorization.

1215412023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359523 (or 359516 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1215412023 is about 34862.7598305126. The cubic root of 1215412023 is about 1067.1885967974.

Adding to 1215412023 its reverse (3202145121), we get a palindrome (4417557144).

The spelling of 1215412023 in words is "one billion, two hundred fifteen million, four hundred twelve thousand, twenty-three".