113509491 has 8 divisors (see below), whose sum is σ = 153262080. Its totient is φ = 74714952.

The previous prime is 113509489. The next prime is 113509523. The reversal of 113509491 is 194905311.

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

It is not a de Polignac number, because 113509491 - 2¹ = 113509489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113509421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239235 + ... + 239708.

It is an arithmetic number, because the mean of its divisors is an integer number (19157760).

Almost surely, 2^113509491 is an apocalyptic number.

113509491 is a deficient number, since it is larger than the sum of its proper divisors (39752589).

113509491 is an equidigital number, since it uses as much as digits as its factorization.

113509491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479025.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 113509491 is about 10654.0833017205. The cubic root of 113509491 is about 484.1843249281.

The spelling of 113509491 in words is "one hundred thirteen million, five hundred nine thousand, four hundred ninety-one".