113045531 has 4 divisors (see below), whose sum is σ = 113178912. Its totient is φ = 112912152.

The previous prime is 113045521. The next prime is 113045551. The reversal of 113045531 is 135540311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135540311 = 23 ⋅5893057.

It is a cyclic number.

It is not a de Polignac number, because 113045531 - 2²² = 108851227 is a prime.

It is a super-3 number, since 3×113045531³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113045497 and 113045506.

It is not an unprimeable number, because it can be changed into a prime (113045501) 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, 65411 + ... + 67116.

It is an arithmetic number, because the mean of its divisors is an integer number (28294728).

Almost surely, 2^113045531 is an apocalyptic number.

113045531 is a deficient number, since it is larger than the sum of its proper divisors (133381).

113045531 is an equidigital number, since it uses as much as digits as its factorization.

113045531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133380.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 113045531 is about 10632.2871951429. The cubic root of 113045531 is about 483.5237372167.

Adding to 113045531 its reverse (135540311), we get a palindrome (248585842).

The spelling of 113045531 in words is "one hundred thirteen million, forty-five thousand, five hundred thirty-one".