1113531505 has 8 divisors (see below), whose sum is σ = 1368829224. Its totient is φ = 869097600.

The previous prime is 1113531487. The next prime is 1113531511. The reversal of 1113531505 is 5051353111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72114064 + 1041417441 = 8492^2 + 32271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1113531505 - 2¹¹ = 1113529457 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 1113531505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2715726 + ... + 2716135.

It is an arithmetic number, because the mean of its divisors is an integer number (171103653).

Almost surely, 2^1113531505 is an apocalyptic number.

It is an amenable number.

1113531505 is a deficient number, since it is larger than the sum of its proper divisors (255297719).

1113531505 is an equidigital number, since it uses as much as digits as its factorization.

1113531505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431907.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 1113531505 is about 33369.6194913877. The cubic root of 1113531505 is about 1036.4956958745.

Adding to 1113531505 its reverse (5051353111), we get a palindrome (6164884616).

The spelling of 1113531505 in words is "one billion, one hundred thirteen million, five hundred thirty-one thousand, five hundred five".