344400231 has 16 divisors (see below), whose sum is σ = 525208064. Its totient is φ = 196647264.

The previous prime is 344400223. The next prime is 344400233. The reversal of 344400231 is 132004443.

It is not a de Polignac number, because 344400231 - 2³ = 344400223 is a prime.

It is a super-2 number, since 2×344400231² = 237223038225706722, which contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344400198 and 344400207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344400233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24870 + ... + 36156.

It is an arithmetic number, because the mean of its divisors is an integer number (32825504).

Almost surely, 2^344400231 is an apocalyptic number.

344400231 is a deficient number, since it is larger than the sum of its proper divisors (180807833).

344400231 is a wasteful number, since it uses less digits than its factorization.

344400231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12750.

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

The square root of 344400231 is about 18558.0233591835. The cubic root of 344400231 is about 700.9512448429.

Adding to 344400231 its reverse (132004443), we get a palindrome (476404674).

The spelling of 344400231 in words is "three hundred forty-four million, four hundred thousand, two hundred thirty-one".