341321640 has 128 divisors (see below), whose sum is σ = 1126811520. Its totient is φ = 82705920.

The previous prime is 341321639. The next prime is 341321641. The reversal of 341321640 is 46123143.

It is an interprime number because it is at equal distance from previous prime (341321639) and next prime (341321641).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 341321640.

It is not an unprimeable number, because it can be changed into a prime (341321641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158652 + ... + 160788.

It is an arithmetic number, because the mean of its divisors is an integer number (8803215).

Almost surely, 2^341321640 is an apocalyptic number.

341321640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 341321640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563405760).

341321640 is an abundant number, since it is smaller than the sum of its proper divisors (785489880).

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

341321640 is a wasteful number, since it uses less digits than its factorization.

341321640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 341321640 is about 18474.8921512414. The cubic root of 341321640 is about 698.8563911764.

Adding to 341321640 its reverse (46123143), we get a palindrome (387444783).

The spelling of 341321640 in words is "three hundred forty-one million, three hundred twenty-one thousand, six hundred forty".