158131008 has 224 divisors, whose sum is σ = 563270400. Its totient is φ = 42467328.

The previous prime is 158130989. The next prime is 158131021. The reversal of 158131008 is 800131851.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205248 + ... + 206016.

It is an arithmetic number, because the mean of its divisors is an integer number (2514600).

Almost surely, 2^158131008 is an apocalyptic number.

158131008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158131008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281635200).

158131008 is an abundant number, since it is smaller than the sum of its proper divisors (405139392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158131008 is a wasteful number, since it uses less digits than its factorization.

158131008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 158131008 is about 12575.0152286190. The cubic root of 158131008 is about 540.7613950711.

Adding to 158131008 its reverse (800131851), we get a palindrome (958262859).

The spelling of 158131008 in words is "one hundred fifty-eight million, one hundred thirty-one thousand, eight".