1215131195 has 8 divisors (see below), whose sum is σ = 1492068336. Its totient is φ = 949497696.

The previous prime is 1215131191. The next prime is 1215131201. The reversal of 1215131195 is 5911315121.

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 1215131195 - 2² = 1215131191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215131191) 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 7 ways as a sum of consecutive naturals, for example, 2825672 + ... + 2826101.

It is an arithmetic number, because the mean of its divisors is an integer number (186508542).

Almost surely, 2^1215131195 is an apocalyptic number.

1215131195 is a deficient number, since it is larger than the sum of its proper divisors (276937141).

1215131195 is an equidigital number, since it uses as much as digits as its factorization.

1215131195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651821.

The product of its digits is 1350, while the sum is 29.

The square root of 1215131195 is about 34858.7319763643. The cubic root of 1215131195 is about 1067.1063970937.

The spelling of 1215131195 in words is "one billion, two hundred fifteen million, one hundred thirty-one thousand, one hundred ninety-five".