1217131160 has 64 divisors (see below), whose sum is σ = 3237710400. Its totient is φ = 402909696.

The previous prime is 1217131151. The next prime is 1217131171. The reversal of 1217131160 is 611317121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66827 + ... + 83066.

It is an arithmetic number, because the mean of its divisors is an integer number (50589225).

Almost surely, 2^1217131160 is an apocalyptic number.

1217131160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217131160 is an abundant number, since it is smaller than the sum of its proper divisors (2020579240).

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

1217131160 is a wasteful number, since it uses less digits than its factorization.

1217131160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149940 (or 149936 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1217131160 is about 34887.4068970452. The cubic root of 1217131160 is about 1067.6915206467.

Adding to 1217131160 its reverse (611317121), we get a palindrome (1828448281).

The spelling of 1217131160 in words is "one billion, two hundred seventeen million, one hundred thirty-one thousand, one hundred sixty".