312530461 has 4 divisors (see below), whose sum is σ = 315624924. Its totient is φ = 309436000.

The previous prime is 312530443. The next prime is 312530467. The reversal of 312530461 is 164035213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164035213 = 163 ⋅1006351.

It can be written as a sum of positive squares in 2 ways, for example, as 233142361 + 79388100 = 15269^2 + 8910^2 .

It is a cyclic number.

It is not a de Polignac number, because 312530461 - 2⁷ = 312530333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312530467) 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, 1547080 + ... + 1547281.

It is an arithmetic number, because the mean of its divisors is an integer number (78906231).

Almost surely, 2^312530461 is an apocalyptic number.

It is an amenable number.

312530461 is a deficient number, since it is larger than the sum of its proper divisors (3094463).

312530461 is a wasteful number, since it uses less digits than its factorization.

312530461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094462.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 312530461 is about 17678.5310758558. The cubic root of 312530461 is about 678.6264524657.

Adding to 312530461 its reverse (164035213), we get a palindrome (476565674).

The spelling of 312530461 in words is "three hundred twelve million, five hundred thirty thousand, four hundred sixty-one".