340021003 has 4 divisors (see below), whose sum is σ = 388595440. Its totient is φ = 291446568.

The previous prime is 340021001. The next prime is 340021007. The reversal of 340021003 is 300120043.

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

It is not a de Polignac number, because 340021003 - 2¹ = 340021001 is a prime.

It is a super-2 number, since 2×340021003² = 231228564962252018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340021001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24287208 + ... + 24287221.

It is an arithmetic number, because the mean of its divisors is an integer number (97148860).

Almost surely, 2^340021003 is an apocalyptic number.

340021003 is a deficient number, since it is larger than the sum of its proper divisors (48574437).

340021003 is an equidigital number, since it uses as much as digits as its factorization.

340021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48574436.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 340021003 is about 18439.6584295914. The cubic root of 340021003 is about 697.9675760726.

Adding to 340021003 its reverse (300120043), we get a palindrome (640141046).

The spelling of 340021003 in words is "three hundred forty million, twenty-one thousand, three".