1215113043 has 8 divisors (see below), whose sum is σ = 1654622208. Its totient is φ = 792839624.

The previous prime is 1215112999. The next prime is 1215113057. The reversal of 1215113043 is 3403115121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215113043 - 2²² = 1210918739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1215113093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4308771 + ... + 4309052.

It is an arithmetic number, because the mean of its divisors is an integer number (206827776).

Almost surely, 2^1215113043 is an apocalyptic number.

1215113043 is a deficient number, since it is larger than the sum of its proper divisors (439509165).

1215113043 is an equidigital number, since it uses as much as digits as its factorization.

1215113043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8617873.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1215113043 is about 34858.4716102126. The cubic root of 1215113043 is about 1067.1010834804.

Adding to 1215113043 its reverse (3403115121), we get a palindrome (4618228164).

The spelling of 1215113043 in words is "one billion, two hundred fifteen million, one hundred thirteen thousand, forty-three".