345015403 has 4 divisors (see below), whose sum is σ = 345578848. Its totient is φ = 344451960.

The previous prime is 345015383. The next prime is 345015413. The reversal of 345015403 is 304510543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304510543 = 367 ⋅829729.

It is a cyclic number.

It is not a de Polignac number, because 345015403 - 2²⁵ = 311460971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345015413) 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, 280803 + ... + 282028.

It is an arithmetic number, because the mean of its divisors is an integer number (86394712).

Almost surely, 2^345015403 is an apocalyptic number.

345015403 is a deficient number, since it is larger than the sum of its proper divisors (563445).

345015403 is an equidigital number, since it uses as much as digits as its factorization.

345015403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563444.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 345015403 is about 18574.5902512007. The cubic root of 345015403 is about 701.3683458911.

Adding to 345015403 its reverse (304510543), we get a palindrome (649525946).

The spelling of 345015403 in words is "three hundred forty-five million, fifteen thousand, four hundred three".