1331132111 has 4 divisors (see below), whose sum is σ = 1331340192. Its totient is φ = 1330924032.

The previous prime is 1331132093. The next prime is 1331132119. The reversal of 1331132111 is 1112311331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112311331 = 107 ⋅10395433.

It is a cyclic number.

It is not a de Polignac number, because 1331132111 - 2²⁶ = 1264023247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331132111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331132119) 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, 94130 + ... + 107343.

It is an arithmetic number, because the mean of its divisors is an integer number (332835048).

Almost surely, 2^1331132111 is an apocalyptic number.

1331132111 is a deficient number, since it is larger than the sum of its proper divisors (208081).

1331132111 is an equidigital number, since it uses as much as digits as its factorization.

1331132111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208080.

The product of its digits is 54, while the sum is 17.

The square root of 1331132111 is about 36484.6832383125. The cubic root of 1331132111 is about 1100.0363930108.

Adding to 1331132111 its reverse (1112311331), we get a palindrome (2443443442).

The spelling of 1331132111 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, one hundred eleven".