312240145 has 16 divisors (see below), whose sum is σ = 428508288. Its totient is φ = 213960960.

The previous prime is 312240143. The next prime is 312240163. The reversal of 312240145 is 541042213.

It is not a de Polignac number, because 312240145 - 2¹ = 312240143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312240143) 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 15 ways as a sum of consecutive naturals, for example, 82750 + ... + 86440.

It is an arithmetic number, because the mean of its divisors is an integer number (26781768).

Almost surely, 2^312240145 is an apocalyptic number.

312240145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312240145 is a deficient number, since it is larger than the sum of its proper divisors (116268143).

312240145 is a wasteful number, since it uses less digits than its factorization.

312240145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 312240145 is about 17670.3181918153. The cubic root of 312240145 is about 678.4162573249.

Adding to 312240145 its reverse (541042213), we get a palindrome (853282358).

The spelling of 312240145 in words is "three hundred twelve million, two hundred forty thousand, one hundred forty-five".