312938641 has 4 divisors (see below), whose sum is σ = 313069284. Its totient is φ = 312808000.

The previous prime is 312938611. The next prime is 312938657. The reversal of 312938641 is 146839213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 135489600 + 177449041 = 11640^2 + 13321^2 .

It is a cyclic number.

It is not a de Polignac number, because 312938641 - 2¹⁷ = 312807569 is a prime.

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 312938641.

It is not an unprimeable number, because it can be changed into a prime (312938611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61660 + ... + 66541.

It is an arithmetic number, because the mean of its divisors is an integer number (78267321).

Almost surely, 2^312938641 is an apocalyptic number.

It is an amenable number.

312938641 is a deficient number, since it is larger than the sum of its proper divisors (130643).

312938641 is a wasteful number, since it uses less digits than its factorization.

312938641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130642.

The product of its digits is 31104, while the sum is 37.

The square root of 312938641 is about 17690.0718200916. The cubic root of 312938641 is about 678.9217636697.

The spelling of 312938641 in words is "three hundred twelve million, nine hundred thirty-eight thousand, six hundred forty-one".