345146531 has 2 divisors, whose sum is σ = 345146532. Its totient is φ = 345146530.

The previous prime is 345146513. The next prime is 345146573. The reversal of 345146531 is 135641543.

Together with previous prime (345146513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (135641543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345146531 - 2¹⁴ = 345130147 is a prime.

It is a super-2 number, since 2×345146531² = 238252255722667922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (345146231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172573265 + 172573266.

It is an arithmetic number, because the mean of its divisors is an integer number (172573266).

Almost surely, 2^345146531 is an apocalyptic number.

345146531 is a deficient number, since it is larger than the sum of its proper divisors (1).

345146531 is an equidigital number, since it uses as much as digits as its factorization.

345146531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 345146531 is about 18578.1196841876. The cubic root of 345146531 is about 701.4571896343.

The spelling of 345146531 in words is "three hundred forty-five million, one hundred forty-six thousand, five hundred thirty-one".