158344331 has 2 divisors, whose sum is σ = 158344332. Its totient is φ = 158344330.

The previous prime is 158344297. The next prime is 158344339. The reversal of 158344331 is 133443851.

It is a strong prime.

It is an emirp because it is prime and its reverse (133443851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158344331 - 2⁶ = 158344267 is a prime.

It is a super-2 number, since 2×158344331² = 50145854319675122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (158344339) 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, 79172165 + 79172166.

It is an arithmetic number, because the mean of its divisors is an integer number (79172166).

Almost surely, 2^158344331 is an apocalyptic number.

158344331 is a deficient number, since it is larger than the sum of its proper divisors (1).

158344331 is an equidigital number, since it uses as much as digits as its factorization.

158344331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 158344331 is about 12583.4943874903. The cubic root of 158344331 is about 541.0044530482.

The spelling of 158344331 in words is "one hundred fifty-eight million, three hundred forty-four thousand, three hundred thirty-one".