113180312387 has 4 divisors (see below), whose sum is σ = 113181568416. Its totient is φ = 113179056360.

The previous prime is 113180312363. The next prime is 113180312419. The reversal of 113180312387 is 783213081311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113180312387 - 2¹² = 113180308291 is a prime.

It is a super-2 number, since 2×113180312387² (a number of 23 digits) contains 22 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 113180312387.

It is not an unprimeable number, because it can be changed into a prime (113180312347) 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, 481448 + ... + 676869.

It is an arithmetic number, because the mean of its divisors is an integer number (28295392104).

Almost surely, 2^113180312387 is an apocalyptic number.

113180312387 is a deficient number, since it is larger than the sum of its proper divisors (1256029).

113180312387 is an equidigital number, since it uses as much as digits as its factorization.

113180312387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256028.

The product of its (nonzero) digits is 24192, while the sum is 38.

Adding to 113180312387 its reverse (783213081311), we get a palindrome (896393393698).

The spelling of 113180312387 in words is "one hundred thirteen billion, one hundred eighty million, three hundred twelve thousand, three hundred eighty-seven".