113131639 has 8 divisors (see below), whose sum is σ = 117245520. Its totient is φ = 109032000.

The previous prime is 113131633. The next prime is 113131673. The reversal of 113131639 is 936131311.

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

It is a cyclic number.

It is not a de Polignac number, because 113131639 - 2³ = 113131631 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 (113131631) 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, 14184 + ... + 20674.

It is an arithmetic number, because the mean of its divisors is an integer number (14655690).

Almost surely, 2^113131639 is an apocalyptic number.

113131639 is a deficient number, since it is larger than the sum of its proper divisors (4113881).

113131639 is an equidigital number, since it uses as much as digits as its factorization.

113131639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7121.

The product of its digits is 1458, while the sum is 28.

The square root of 113131639 is about 10636.3357882308. The cubic root of 113131639 is about 483.6464744735.

The spelling of 113131639 in words is "one hundred thirteen million, one hundred thirty-one thousand, six hundred thirty-nine".