1131220313 has 8 divisors (see below), whose sum is σ = 1171195200. Its totient is φ = 1091309968.

The previous prime is 1131220303. The next prime is 1131220333. The reversal of 1131220313 is 3130221311.

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 1131220313 - 2⁴ = 1131220297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131220291 and 1131220300.

It is not an unprimeable number, because it can be changed into a prime (1131220303) 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, 21020 + ... + 52002.

It is an arithmetic number, because the mean of its divisors is an integer number (146399400).

Almost surely, 2^1131220313 is an apocalyptic number.

It is an amenable number.

1131220313 is a deficient number, since it is larger than the sum of its proper divisors (39974887).

1131220313 is a wasteful number, since it uses less digits than its factorization.

1131220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32271.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1131220313 is about 33633.6187913225. The cubic root of 1131220313 is about 1041.9552446445.

Adding to 1131220313 its reverse (3130221311), we get a palindrome (4261441624).

The spelling of 1131220313 in words is "one billion, one hundred thirty-one million, two hundred twenty thousand, three hundred thirteen".