1131210305 has 8 divisors (see below), whose sum is σ = 1401241344. Its totient is φ = 875775600.

The previous prime is 1131210299. The next prime is 1131210329. The reversal of 1131210305 is 5030121311.

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

It is not a de Polignac number, because 1131210305 - 2¹⁶ = 1131144769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3648911 + ... + 3649220.

It is an arithmetic number, because the mean of its divisors is an integer number (175155168).

Almost surely, 2^1131210305 is an apocalyptic number.

It is an amenable number.

1131210305 is a deficient number, since it is larger than the sum of its proper divisors (270031039).

1131210305 is an equidigital number, since it uses as much as digits as its factorization.

1131210305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298167.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1131210305 is about 33633.4700112849. The cubic root of 1131210305 is about 1041.9521718806.

Adding to 1131210305 its reverse (5030121311), we get a palindrome (6161331616).

The spelling of 1131210305 in words is "one billion, one hundred thirty-one million, two hundred ten thousand, three hundred five".