155340313 has 2 divisors, whose sum is σ = 155340314. Its totient is φ = 155340312.

The previous prime is 155340301. The next prime is 155340329. The reversal of 155340313 is 313043551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107495424 + 47844889 = 10368^2 + 6917^2 .

It is a cyclic number.

It is not a de Polignac number, because 155340313 - 2²¹ = 153243161 is a prime.

It is a super-2 number, since 2×155340313² = 48261225685875938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155340113) 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, 77670156 + 77670157.

It is an arithmetic number, because the mean of its divisors is an integer number (77670157).

Almost surely, 2^155340313 is an apocalyptic number.

It is an amenable number.

155340313 is a deficient number, since it is larger than the sum of its proper divisors (1).

155340313 is an equidigital number, since it uses as much as digits as its factorization.

155340313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 155340313 is about 12463.5594033165. The cubic root of 155340313 is about 537.5613780999.

Adding to 155340313 its reverse (313043551), we get a palindrome (468383864).

The spelling of 155340313 in words is "one hundred fifty-five million, three hundred forty thousand, three hundred thirteen".