158485331 has 2 divisors, whose sum is σ = 158485332. Its totient is φ = 158485330.

The previous prime is 158485291. The next prime is 158485333. The reversal of 158485331 is 133584851.

158485331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158485331 is a prime.

It is a super-2 number, since 2×158485331² = 50235200284359122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 158485333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158485333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79242665 + 79242666.

It is an arithmetic number, because the mean of its divisors is an integer number (79242666).

Almost surely, 2^158485331 is an apocalyptic number.

158485331 is a deficient number, since it is larger than the sum of its proper divisors (1).

158485331 is an equidigital number, since it uses as much as digits as its factorization.

158485331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 158485331 is about 12589.0957181205. The cubic root of 158485331 is about 541.1649871546.

The spelling of 158485331 in words is "one hundred fifty-eight million, four hundred eighty-five thousand, three hundred thirty-one".