340431401 has 4 divisors (see below), whose sum is σ = 340905600. Its totient is φ = 339957204.

The previous prime is 340431397. The next prime is 340431419. The reversal of 340431401 is 104134043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340431401 - 2² = 340431397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340431431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236021 + ... + 237458.

It is an arithmetic number, because the mean of its divisors is an integer number (85226400).

Almost surely, 2^340431401 is an apocalyptic number.

It is an amenable number.

340431401 is a deficient number, since it is larger than the sum of its proper divisors (474199).

340431401 is an equidigital number, since it uses as much as digits as its factorization.

340431401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474198.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 340431401 is about 18450.7832083085. The cubic root of 340431401 is about 698.2482737627.

Adding to 340431401 its reverse (104134043), we get a palindrome (444565444).

The spelling of 340431401 in words is "three hundred forty million, four hundred thirty-one thousand, four hundred one".