113511 has 8 divisors (see below), whose sum is σ = 152944. Its totient is φ = 74880.

The previous prime is 113501. The next prime is 113513. The reversal of 113511 is 115311.

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

It is not a de Polignac number, because 113511 - 2⁷ = 113383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (19118).

2¹¹³⁵¹¹ is an apocalyptic number.

113511 is a deficient number, since it is larger than the sum of its proper divisors (39433).

113511 is a wasteful number, since it uses less digits than its factorization.

113511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its digits is 15, while the sum is 12.

The square root of 113511 is about 336.9139355978. The cubic root of 113511 is about 48.4186470508.

Adding to 113511 its product of digits (15), we get a triangular number (113526 = T₄₇₆).

Adding to 113511 its reverse (115311), we get a palindrome (228822).

The spelling of 113511 in words is "one hundred thirteen thousand, five hundred eleven".