113731013 has 4 divisors (see below), whose sum is σ = 124070208. Its totient is φ = 103391820.

The previous prime is 113730983. The next prime is 113731019. The reversal of 113731013 is 310137311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310137311 = 11 ⋅28194301.

It is a cyclic number.

It is not a de Polignac number, because 113731013 - 2¹⁶ = 113665477 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 (113731019) 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, 5169581 + ... + 5169602.

It is an arithmetic number, because the mean of its divisors is an integer number (31017552).

Almost surely, 2^113731013 is an apocalyptic number.

It is an amenable number.

113731013 is a deficient number, since it is larger than the sum of its proper divisors (10339195).

113731013 is a wasteful number, since it uses less digits than its factorization.

113731013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10339194.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 113731013 is about 10664.4743424137. The cubic root of 113731013 is about 484.4990938549.

Adding to 113731013 its reverse (310137311), we get a palindrome (423868324).

The spelling of 113731013 in words is "one hundred thirteen million, seven hundred thirty-one thousand, thirteen".