159431 has 2 divisors, whose sum is σ = 159432. Its totient is φ = 159430.

The previous prime is 159421. The next prime is 159437. The reversal of 159431 is 134951.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (134951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159431 - 2¹⁰ = 158407 is a prime.

It is a super-2 number, since 2×159431² = 50836487522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 159397 and 159406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159437) 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, 79715 + 79716.

It is an arithmetic number, because the mean of its divisors is an integer number (79716).

2¹⁵⁹⁴³¹ is an apocalyptic number.

159431 is a deficient number, since it is larger than the sum of its proper divisors (1).

159431 is an equidigital number, since it uses as much as digits as its factorization.

159431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 23.

The square root of 159431 is about 399.2881165274. The cubic root of 159431 is about 54.2239215765.

The spelling of 159431 in words is "one hundred fifty-nine thousand, four hundred thirty-one".