1211131339 has 8 divisors (see below), whose sum is σ = 1321509168. Its totient is φ = 1100799360.

The previous prime is 1211131333. The next prime is 1211131367. The reversal of 1211131339 is 9331311121.

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 1211131339 - 2¹⁵ = 1211098571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211131333) by changing a digit.

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, 67399 + ... + 83455.

It is an arithmetic number, because the mean of its divisors is an integer number (165188646).

Almost surely, 2^1211131339 is an apocalyptic number.

1211131339 is a deficient number, since it is larger than the sum of its proper divisors (110377829).

1211131339 is a wasteful number, since it uses less digits than its factorization.

1211131339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22925.

The product of its digits is 486, while the sum is 25.

The square root of 1211131339 is about 34801.3123172101. The cubic root of 1211131339 is about 1065.9342427819.

The spelling of 1211131339 in words is "one billion, two hundred eleven million, one hundred thirty-one thousand, three hundred thirty-nine".