1131220302 has 8 divisors (see below), whose sum is σ = 2262440616. Its totient is φ = 377073432.

The previous prime is 1131220297. The next prime is 1131220303. The reversal of 1131220302 is 2030221311.

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

1131220302 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 94268353 + ... + 94268364.

It is an arithmetic number, because the mean of its divisors is an integer number (282805077).

Almost surely, 2^1131220302 is an apocalyptic number.

1131220302 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1131220302 is a wasteful number, since it uses less digits than its factorization.

1131220302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188536722.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1131220302 is about 33633.6186277956. The cubic root of 1131220302 is about 1041.9552412672.

Adding to 1131220302 its reverse (2030221311), we get a palindrome (3161441613).

The spelling of 1131220302 in words is "one billion, one hundred thirty-one million, two hundred twenty thousand, three hundred two".