1211131341 has 24 divisors (see below), whose sum is σ = 2001157184. Its totient is φ = 691441920.

The previous prime is 1211131333. The next prime is 1211131367. The reversal of 1211131341 is 1431311121.

It is a happy number.

It is not a de Polignac number, because 1211131341 - 2³ = 1211131333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211131301) 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 23 ways as a sum of consecutive naturals, for example, 65565 + ... + 81981.

Almost surely, 2^1211131341 is an apocalyptic number.

It is an amenable number.

1211131341 is a deficient number, since it is larger than the sum of its proper divisors (790025843).

1211131341 is a wasteful number, since it uses less digits than its factorization.

1211131341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17601 (or 17598 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1211131341 is about 34801.3123459447. The cubic root of 1211131341 is about 1065.9342433687.

Adding to 1211131341 its reverse (1431311121), we get a palindrome (2642442462).

The spelling of 1211131341 in words is "one billion, two hundred eleven million, one hundred thirty-one thousand, three hundred forty-one".