113103231505 has 32 divisors (see below), whose sum is σ = 157126428288. Its totient is φ = 77243212800.

The previous prime is 113103231503. The next prime is 113103231547. The reversal of 113103231505 is 505132301311.

It is not a de Polignac number, because 113103231505 - 2¹ = 113103231503 is a prime.

It is a super-3 number, since 3×113103231505³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113103231505.

It is not an unprimeable number, because it can be changed into a prime (113103231503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277675 + ... + 550735.

It is an arithmetic number, because the mean of its divisors is an integer number (4910200884).

Almost surely, 2^113103231505 is an apocalyptic number.

It is an amenable number.

113103231505 is a deficient number, since it is larger than the sum of its proper divisors (44023196783).

113103231505 is a wasteful number, since it uses less digits than its factorization.

113103231505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273537.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 113103231505 its reverse (505132301311), we get a palindrome (618235532816).

The spelling of 113103231505 in words is "one hundred thirteen billion, one hundred three million, two hundred thirty-one thousand, five hundred five".