2003400343 has 16 divisors (see below), whose sum is σ = 2483417664. Its totient is φ = 1576765440.

The previous prime is 2003400341. The next prime is 2003400353. The reversal of 2003400343 is 3430043002.

It is a cyclic number.

It is not a de Polignac number, because 2003400343 - 2¹ = 2003400341 is a prime.

It is a super-2 number, since 2×2003400343² = 8027225868665035298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2003400343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003400341) 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, 200430 + ... + 210187.

It is an arithmetic number, because the mean of its divisors is an integer number (155213604).

Almost surely, 2^2003400343 is an apocalyptic number.

2003400343 is a deficient number, since it is larger than the sum of its proper divisors (480017321).

2003400343 is a wasteful number, since it uses less digits than its factorization.

2003400343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410682.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 2003400343 is about 44759.3603953408. The cubic root of 2003400343 is about 1260.6346729075.

Adding to 2003400343 its reverse (3430043002), we get a palindrome (5433443345).

The spelling of 2003400343 in words is "two billion, three million, four hundred thousand, three hundred forty-three".