158242313 has 2 divisors, whose sum is σ = 158242314. Its totient is φ = 158242312.

The previous prime is 158242309. The next prime is 158242339. The reversal of 158242313 is 313242851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142969849 + 15272464 = 11957^2 + 3908^2 .

It is a cyclic number.

It is not a de Polignac number, because 158242313 - 2² = 158242309 is a prime.

It is not a weakly prime, because it can be changed into another prime (158248313) 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, 79121156 + 79121157.

It is an arithmetic number, because the mean of its divisors is an integer number (79121157).

Almost surely, 2^158242313 is an apocalyptic number.

It is an amenable number.

158242313 is a deficient number, since it is larger than the sum of its proper divisors (1).

158242313 is an equidigital number, since it uses as much as digits as its factorization.

158242313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 158242313 is about 12579.4400908784. The cubic root of 158242313 is about 540.8882420683. Note that the first 3 decimals are identical.

The spelling of 158242313 in words is "one hundred fifty-eight million, two hundred forty-two thousand, three hundred thirteen".