158231247 has 8 divisors (see below), whose sum is σ = 211196160. Its totient is φ = 105376920.

The previous prime is 158231219. The next prime is 158231261. The reversal of 158231247 is 742132851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158231247 - 2¹⁴ = 158214863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158231207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24247 + ... + 30072.

It is an arithmetic number, because the mean of its divisors is an integer number (26399520).

Almost surely, 2^158231247 is an apocalyptic number.

158231247 is a deficient number, since it is larger than the sum of its proper divisors (52964913).

158231247 is an equidigital number, since it uses as much as digits as its factorization.

158231247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55293.

The product of its digits is 13440, while the sum is 33.

The square root of 158231247 is about 12579.0002384927. Note that the first 3 decimals coincide. The cubic root of 158231247 is about 540.8756335384.

The spelling of 158231247 in words is "one hundred fifty-eight million, two hundred thirty-one thousand, two hundred forty-seven".