345246431 has 2 divisors, whose sum is σ = 345246432. Its totient is φ = 345246430.

The previous prime is 345246409. The next prime is 345246437. The reversal of 345246431 is 134642543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345246431 - 2¹⁸ = 344984287 is a prime.

It is a super-2 number, since 2×345246431² = 238390196236475522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345246437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172623215 + 172623216.

It is an arithmetic number, because the mean of its divisors is an integer number (172623216).

Almost surely, 2^345246431 is an apocalyptic number.

345246431 is a deficient number, since it is larger than the sum of its proper divisors (1).

345246431 is an equidigital number, since it uses as much as digits as its factorization.

345246431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 32.

The square root of 345246431 is about 18580.8081363540. The cubic root of 345246431 is about 701.5248602293.

Adding to 345246431 its reverse (134642543), we get a palindrome (479888974).

The spelling of 345246431 in words is "three hundred forty-five million, two hundred forty-six thousand, four hundred thirty-one".