159138031 has 4 divisors (see below), whose sum is σ = 171379432. Its totient is φ = 146896632.

The previous prime is 159138011. The next prime is 159138047. The reversal of 159138031 is 130831951.

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

It is a cyclic number.

It is not a de Polignac number, because 159138031 - 2²¹ = 157040879 is a prime.

It is a super-2 number, since 2×159138031² = 50649825821113922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159137984 and 159138002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159138011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6120681 + ... + 6120706.

It is an arithmetic number, because the mean of its divisors is an integer number (42844858).

Almost surely, 2^159138031 is an apocalyptic number.

159138031 is a deficient number, since it is larger than the sum of its proper divisors (12241401).

159138031 is a wasteful number, since it uses less digits than its factorization.

159138031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241400.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 159138031 is about 12614.9923107388. The cubic root of 159138031 is about 541.9068741115.

Adding to 159138031 its reverse (130831951), we get a palindrome (289969982).

The spelling of 159138031 in words is "one hundred fifty-nine million, one hundred thirty-eight thousand, thirty-one".