1105520231 has 4 divisors (see below), whose sum is σ = 1153586352. Its totient is φ = 1057454112.

The previous prime is 1105520189. The next prime is 1105520257. The reversal of 1105520231 is 1320255011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320255011 = 71 ⋅18595141.

It is a cyclic number.

It is not a de Polignac number, because 1105520231 - 2¹⁸ = 1105258087 is a prime.

It is a super-2 number, since 2×1105520231² = 2444349962300586722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105520291) 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, 24033026 + ... + 24033071.

It is an arithmetic number, because the mean of its divisors is an integer number (288396588).

Almost surely, 2^1105520231 is an apocalyptic number.

1105520231 is a deficient number, since it is larger than the sum of its proper divisors (48066121).

1105520231 is an equidigital number, since it uses as much as digits as its factorization.

1105520231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48066120.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1105520231 is about 33249.3643698643. The cubic root of 1105520231 is about 1034.0040302661.

Adding to 1105520231 its reverse (1320255011), we get a palindrome (2425775242).

The spelling of 1105520231 in words is "one billion, one hundred five million, five hundred twenty thousand, two hundred thirty-one".