345543403 has 2 divisors, whose sum is σ = 345543404. Its totient is φ = 345543402.

The previous prime is 345543349. The next prime is 345543409. The reversal of 345543403 is 304345543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345543403 is a prime.

It is not a weakly prime, because it can be changed into another prime (345543409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172771701 + 172771702.

It is an arithmetic number, because the mean of its divisors is an integer number (172771702).

Almost surely, 2^345543403 is an apocalyptic number.

345543403 is a deficient number, since it is larger than the sum of its proper divisors (1).

345543403 is an equidigital number, since it uses as much as digits as its factorization.

345543403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 31.

The square root of 345543403 is about 18588.7977825356. The cubic root of 345543403 is about 701.7259470631.

Adding to 345543403 its reverse (304345543), we get a palindrome (649888946).

The spelling of 345543403 in words is "three hundred forty-five million, five hundred forty-three thousand, four hundred three".