342562981 has 2 divisors, whose sum is σ = 342562982. Its totient is φ = 342562980.

The previous prime is 342562907. The next prime is 342562991. The reversal of 342562981 is 189265243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293436900 + 49126081 = 17130^2 + 7009^2 .

It is an emirp because it is prime and its reverse (189265243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342562981 - 2¹³ = 342554789 is a prime.

It is a super-2 number, since 2×342562981² = 234698791903212722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342562991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171281490 + 171281491.

It is an arithmetic number, because the mean of its divisors is an integer number (171281491).

Almost surely, 2^342562981 is an apocalyptic number.

It is an amenable number.

342562981 is a deficient number, since it is larger than the sum of its proper divisors (1).

342562981 is an equidigital number, since it uses as much as digits as its factorization.

342562981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 342562981 is about 18508.4570129441. The cubic root of 342562981 is about 699.7025818132.

The spelling of 342562981 in words is "three hundred forty-two million, five hundred sixty-two thousand, nine hundred eighty-one".