113031303218 has 4 divisors (see below), whose sum is σ = 169546954830. Its totient is φ = 56515651608.

The previous prime is 113031303211. The next prime is 113031303269. The reversal of 113031303218 is 812303130311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812303130311 = 41 ⋅19812271471.

It can be written as a sum of positive squares in only one way, i.e., 57563045929 + 55468257289 = 239923^2 + 235517^2 .

It is not an unprimeable number, because it can be changed into a prime (113031303211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28257825803 + ... + 28257825806.

Almost surely, 2^113031303218 is an apocalyptic number.

113031303218 is a deficient number, since it is larger than the sum of its proper divisors (56515651612).

113031303218 is an equidigital number, since it uses as much as digits as its factorization.

113031303218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56515651611.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 113031303218 its reverse (812303130311), we get a palindrome (925334433529).

The spelling of 113031303218 in words is "one hundred thirteen billion, thirty-one million, three hundred three thousand, two hundred eighteen".