1105421331 has 24 divisors (see below), whose sum is σ = 1789081344. Its totient is φ = 604203600.

The previous prime is 1105421323. The next prime is 1105421363. The reversal of 1105421331 is 1331245011.

It is not a de Polignac number, because 1105421331 - 2³ = 1105421323 is a prime.

It is a super-2 number, since 2×1105421331² = 2443912638059623122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1105421298 and 1105421307.

It is not an unprimeable number, because it can be changed into a prime (1105421231) 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, 160095 + ... + 166856.

It is an arithmetic number, because the mean of its divisors is an integer number (74545056).

Almost surely, 2^1105421331 is an apocalyptic number.

1105421331 is a deficient number, since it is larger than the sum of its proper divisors (683660013).

1105421331 is a wasteful number, since it uses less digits than its factorization.

1105421331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326991 (or 326984 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1105421331 is about 33247.8770901241. The cubic root of 1105421331 is about 1033.9731952965.

Adding to 1105421331 its reverse (1331245011), we get a palindrome (2436666342).

It can be divided in two parts, 11054 and 21331, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 1105421331 in words is "one billion, one hundred five million, four hundred twenty-one thousand, three hundred thirty-one".