344402431 has 4 divisors (see below), whose sum is σ = 345489192. Its totient is φ = 343315672.

The previous prime is 344402423. The next prime is 344402447. The reversal of 344402431 is 134204443.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 344402431 - 2³ = 344402423 is a prime.

It is a super-2 number, since 2×344402431² = 237226068957419522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344402396 and 344402405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344403431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542905 + ... + 543538.

It is an arithmetic number, because the mean of its divisors is an integer number (86372298).

Almost surely, 2^344402431 is an apocalyptic number.

344402431 is a deficient number, since it is larger than the sum of its proper divisors (1086761).

344402431 is a wasteful number, since it uses less digits than its factorization.

344402431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086760.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 344402431 is about 18558.0826326428. The cubic root of 344402431 is about 700.9527373791.

Adding to 344402431 its reverse (134204443), we get a palindrome (478606874).

The spelling of 344402431 in words is "three hundred forty-four million, four hundred two thousand, four hundred thirty-one".