345206431 has 2 divisors, whose sum is σ = 345206432. Its totient is φ = 345206430.

The previous prime is 345206423. The next prime is 345206461. The reversal of 345206431 is 134602543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345206431 - 2³ = 345206423 is a prime.

It is a super-2 number, since 2×345206431² = 238334960007515522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345206431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345206461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172603215 + 172603216.

It is an arithmetic number, because the mean of its divisors is an integer number (172603216).

Almost surely, 2^345206431 is an apocalyptic number.

345206431 is a deficient number, since it is larger than the sum of its proper divisors (1).

345206431 is an equidigital number, since it uses as much as digits as its factorization.

345206431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 345206431 is about 18579.7317257274. The cubic root of 345206431 is about 701.4977664632.

Adding to 345206431 its reverse (134602543), we get a palindrome (479808974).

The spelling of 345206431 in words is "three hundred forty-five million, two hundred six thousand, four hundred thirty-one".