312240340 has 24 divisors (see below), whose sum is σ = 656177760. Its totient is φ = 124806048.

The previous prime is 312240307. The next prime is 312240347. The reversal of 312240340 is 43042213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312240347) 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 7 ways as a sum of consecutive naturals, for example, 27559 + ... + 37201.

It is an arithmetic number, because the mean of its divisors is an integer number (27340740).

Almost surely, 2^312240340 is an apocalyptic number.

It is an amenable number.

312240340 is an abundant number, since it is smaller than the sum of its proper divisors (343937420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312240340 is a wasteful number, since it uses less digits than its factorization.

312240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11271 (or 11269 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 312240340 is about 17670.3237095419. The cubic root of 312240340 is about 678.4163985529.

Adding to 312240340 its reverse (43042213), we get a palindrome (355282553).

The spelling of 312240340 in words is "three hundred twelve million, two hundred forty thousand, three hundred forty".