343240401 has 16 divisors (see below), whose sum is σ = 539906048. Its totient is φ = 189810000.

The previous prime is 343240369. The next prime is 343240427. The reversal of 343240401 is 104042343.

It is not a de Polignac number, because 343240401 - 2⁵ = 343240369 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (343240451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262975 + ... + 264276.

It is an arithmetic number, because the mean of its divisors is an integer number (33744128).

Almost surely, 2^343240401 is an apocalyptic number.

343240401 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

343240401 is a deficient number, since it is larger than the sum of its proper divisors (196665647).

343240401 is a wasteful number, since it uses less digits than its factorization.

343240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527292.

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

The square root of 343240401 is about 18526.7482575869. The cubic root of 343240401 is about 700.1634999034.

Adding to 343240401 its reverse (104042343), we get a palindrome (447282744).

The spelling of 343240401 in words is "three hundred forty-three million, two hundred forty thousand, four hundred one".