127313243 has 4 divisors (see below), whose sum is σ = 134013960. Its totient is φ = 120612528.

The previous prime is 127313233. The next prime is 127313273. The reversal of 127313243 is 342313721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127313243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127313203) 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, 3350330 + ... + 3350367.

It is an arithmetic number, because the mean of its divisors is an integer number (33503490).

Almost surely, 2^127313243 is an apocalyptic number.

127313243 is a deficient number, since it is larger than the sum of its proper divisors (6700717).

127313243 is an equidigital number, since it uses as much as digits as its factorization.

127313243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700716.

The product of its digits is 3024, while the sum is 26.

The square root of 127313243 is about 11283.3170211600. The cubic root of 127313243 is about 503.0654911189.

Adding to 127313243 its reverse (342313721), we get a palindrome (469626964).

The spelling of 127313243 in words is "one hundred twenty-seven million, three hundred thirteen thousand, two hundred forty-three".