343611623 has 2 divisors, whose sum is σ = 343611624. Its totient is φ = 343611622.

The previous prime is 343611551. The next prime is 343611649. The reversal of 343611623 is 326116343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 343611623 - 2¹² = 343607527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343611673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171805811 + 171805812.

It is an arithmetic number, because the mean of its divisors is an integer number (171805812).

Almost surely, 2^343611623 is an apocalyptic number.

343611623 is a deficient number, since it is larger than the sum of its proper divisors (1).

343611623 is an equidigital number, since it uses as much as digits as its factorization.

343611623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 343611623 is about 18536.7640919336. The cubic root of 343611623 is about 700.4158230066.

Adding to 343611623 its reverse (326116343), we get a palindrome (669727966).

The spelling of 343611623 in words is "three hundred forty-three million, six hundred eleven thousand, six hundred twenty-three".