158431104 has 192 divisors, whose sum is σ = 501228000. Its totient is φ = 47738880.

The previous prime is 158431087. The next prime is 158431123. The reversal of 158431104 is 401134851.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1063222 + ... + 1063370.

Almost surely, 2^158431104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158431104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250614000).

158431104 is an abundant number, since it is smaller than the sum of its proper divisors (342796896).

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

158431104 is a wasteful number, since it uses less digits than its factorization.

158431104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 158431104 is about 12586.9418049024. The cubic root of 158431104 is about 541.1032588311.

Adding to 158431104 its reverse (401134851), we get a palindrome (559565955).

The spelling of 158431104 in words is "one hundred fifty-eight million, four hundred thirty-one thousand, one hundred four".