340140234 has 64 divisors (see below), whose sum is σ = 799349760. Its totient is φ = 94469760.

The previous prime is 340140187. The next prime is 340140287. The reversal of 340140234 is 432041043.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 340140234.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 597502 + ... + 598070.

It is an arithmetic number, because the mean of its divisors is an integer number (12489840).

Almost surely, 2^340140234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340140234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399674880).

340140234 is an abundant number, since it is smaller than the sum of its proper divisors (459209526).

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

340140234 is a wasteful number, since it uses less digits than its factorization.

340140234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

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

The square root of 340140234 is about 18442.8911507930. The cubic root of 340140234 is about 698.0491491186.

Adding to 340140234 its reverse (432041043), we get a palindrome (772181277).

The spelling of 340140234 in words is "three hundred forty million, one hundred forty thousand, two hundred thirty-four".