158031103 has 4 divisors (see below), whose sum is σ = 158151520. Its totient is φ = 157910688.

The previous prime is 158031077. The next prime is 158031119. The reversal of 158031103 is 301130851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158031103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158031163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58218 + ... + 60871.

It is an arithmetic number, because the mean of its divisors is an integer number (39537880).

Almost surely, 2^158031103 is an apocalyptic number.

158031103 is a deficient number, since it is larger than the sum of its proper divisors (120417).

158031103 is a wasteful number, since it uses less digits than its factorization.

158031103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120416.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 158031103 is about 12571.0422400054. The cubic root of 158031103 is about 540.6474892045.

Adding to 158031103 its reverse (301130851), we get a palindrome (459161954).

The spelling of 158031103 in words is "one hundred fifty-eight million, thirty-one thousand, one hundred three".