1105521131 has 8 divisors (see below), whose sum is σ = 1298794224. Its totient is φ = 927709920.

The previous prime is 1105521121. The next prime is 1105521143. The reversal of 1105521131 is 1311255011.

It is a happy number.

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 1105521131 - 2²⁶ = 1038412267 is a prime.

It is a super-2 number, since 2×1105521131² = 2444353942175038322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1105521121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3865316 + ... + 3865601.

It is an arithmetic number, because the mean of its divisors is an integer number (162349278).

Almost surely, 2^1105521131 is an apocalyptic number.

1105521131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1105521131 is a deficient number, since it is larger than the sum of its proper divisors (193273093).

1105521131 is a wasteful number, since it uses less digits than its factorization.

1105521131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7730941.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1105521131 is about 33249.3779039548. The cubic root of 1105521131 is about 1034.0043108590.

Adding to 1105521131 its reverse (1311255011), we get a palindrome (2416776142).

The spelling of 1105521131 in words is "one billion, one hundred five million, five hundred twenty-one thousand, one hundred thirty-one".