1131270216 has 32 divisors (see below), whose sum is σ = 2838402240. Its totient is φ = 375726528.

The previous prime is 1131270209. The next prime is 1131270223. The reversal of 1131270216 is 6120721311.

It is an interprime number because it is at equal distance from previous prime (1131270209) and next prime (1131270223).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78436 + ... + 91731.

It is an arithmetic number, because the mean of its divisors is an integer number (88700070).

Almost surely, 2^1131270216 is an apocalyptic number.

It is an amenable number.

1131270216 is an abundant number, since it is smaller than the sum of its proper divisors (1707132024).

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

1131270216 is a wasteful number, since it uses less digits than its factorization.

1131270216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170453 (or 170449 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1131270216 is about 33634.3606450308. The cubic root of 1131270216 is about 1041.9705661303.

Adding to 1131270216 its reverse (6120721311), we get a palindrome (7251991527).

The spelling of 1131270216 in words is "one billion, one hundred thirty-one million, two hundred seventy thousand, two hundred sixteen".