312030113 has 4 divisors (see below), whose sum is σ = 312104580. Its totient is φ = 311955648.

The previous prime is 312030071. The next prime is 312030143. The reversal of 312030113 is 311030213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311030213 = 13 ⋅23925401.

It can be written as a sum of positive squares in 2 ways, for example, as 127396369 + 184633744 = 11287^2 + 13588^2 .

It is a cyclic number.

It is not a de Polignac number, because 312030113 - 2¹⁶ = 311964577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312030143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30548 + ... + 39461.

It is an arithmetic number, because the mean of its divisors is an integer number (78026145).

Almost surely, 2^312030113 is an apocalyptic number.

It is an amenable number.

312030113 is a deficient number, since it is larger than the sum of its proper divisors (74467).

312030113 is an equidigital number, since it uses as much as digits as its factorization.

312030113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74466.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 312030113 is about 17664.3741185472. The cubic root of 312030113 is about 678.2641083176.

Adding to 312030113 its reverse (311030213), we get a palindrome (623060326).

It can be divided in two parts, 3120 and 30113, that added together give a palindrome (33233).

The spelling of 312030113 in words is "three hundred twelve million, thirty thousand, one hundred thirteen".