340440312 has 32 divisors (see below), whose sum is σ = 853574400. Its totient is φ = 113150304.

The previous prime is 340440307. The next prime is 340440313. The reversal of 340440312 is 213044043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340440313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12112 + ... + 28767.

It is an arithmetic number, because the mean of its divisors is an integer number (26674200).

Almost surely, 2^340440312 is an apocalyptic number.

It is an amenable number.

340440312 is an abundant number, since it is smaller than the sum of its proper divisors (513134088).

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

340440312 is a wasteful number, since it uses less digits than its factorization.

340440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41235 (or 41231 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 340440312 is about 18451.0246869923. The cubic root of 340440312 is about 698.2543660680.

Adding to 340440312 its reverse (213044043), we get a palindrome (553484355).

The spelling of 340440312 in words is "three hundred forty million, four hundred forty thousand, three hundred twelve".