342689513 has 2 divisors, whose sum is σ = 342689514. Its totient is φ = 342689512.

The previous prime is 342689509. The next prime is 342689539. The reversal of 342689513 is 315986243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238486249 + 104203264 = 15443^2 + 10208^2 .

It is an emirp because it is prime and its reverse (315986243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342689513 - 2² = 342689509 is a prime.

It is a super-2 number, since 2×342689513² = 234872204640354338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342629513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171344756 + 171344757.

It is an arithmetic number, because the mean of its divisors is an integer number (171344757).

Almost surely, 2^342689513 is an apocalyptic number.

It is an amenable number.

342689513 is a deficient number, since it is larger than the sum of its proper divisors (1).

342689513 is an equidigital number, since it uses as much as digits as its factorization.

342689513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 342689513 is about 18511.8749185489. The cubic root of 342689513 is about 699.7887205902.

The spelling of 342689513 in words is "three hundred forty-two million, six hundred eighty-nine thousand, five hundred thirteen".