312061249 has 4 divisors (see below), whose sum is σ = 312199636. Its totient is φ = 311922864.

The previous prime is 312061237. The next prime is 312061273. The reversal of 312061249 is 942160213.

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 81993025 + 230068224 = 9055^2 + 15168^2 .

It is a cyclic number.

It is not a de Polignac number, because 312061249 - 2¹³ = 312053057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312061289) 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, 65754 + ... + 70339.

It is an arithmetic number, because the mean of its divisors is an integer number (78049909).

Almost surely, 2^312061249 is an apocalyptic number.

It is an amenable number.

312061249 is a deficient number, since it is larger than the sum of its proper divisors (138387).

312061249 is a wasteful number, since it uses less digits than its factorization.

312061249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138386.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 312061249 is about 17665.2554184761. The cubic root of 312061249 is about 678.2866678164.

The spelling of 312061249 in words is "three hundred twelve million, sixty-one thousand, two hundred forty-nine".