345531503 has 2 divisors, whose sum is σ = 345531504. Its totient is φ = 345531502.

The previous prime is 345531497. The next prime is 345531523. The reversal of 345531503 is 305135543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345531503 - 2⁸ = 345531247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345531523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172765751 + 172765752.

It is an arithmetic number, because the mean of its divisors is an integer number (172765752).

Almost surely, 2^345531503 is an apocalyptic number.

345531503 is a deficient number, since it is larger than the sum of its proper divisors (1).

345531503 is an equidigital number, since it uses as much as digits as its factorization.

345531503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 345531503 is about 18588.4776945289. The cubic root of 345531503 is about 701.7178915052.

The spelling of 345531503 in words is "three hundred forty-five million, five hundred thirty-one thousand, five hundred three".