345707431 has 2 divisors, whose sum is σ = 345707432. Its totient is φ = 345707430.

The previous prime is 345707429. The next prime is 345707437. The reversal of 345707431 is 134707543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345707431 - 2¹ = 345707429 is a prime.

It is a super-2 number, since 2×345707431² = 239027255697239522, which contains 22 as substring.

Together with 345707429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345707437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172853715 + 172853716.

It is an arithmetic number, because the mean of its divisors is an integer number (172853716).

Almost surely, 2^345707431 is an apocalyptic number.

345707431 is a deficient number, since it is larger than the sum of its proper divisors (1).

345707431 is an equidigital number, since it uses as much as digits as its factorization.

345707431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 345707431 is about 18593.2092711291. The cubic root of 345707431 is about 701.8369649502.

The spelling of 345707431 in words is "three hundred forty-five million, seven hundred seven thousand, four hundred thirty-one".