158105131 has 4 divisors (see below), whose sum is σ = 158265664. Its totient is φ = 157944600.

The previous prime is 158105119. The next prime is 158105147. The reversal of 158105131 is 131501851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158105131 - 2¹⁷ = 157974059 is a prime.

It is a super-2 number, since 2×158105131² = 49994464897054322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158105096 and 158105105.

It is not an unprimeable number, because it can be changed into a prime (158105111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78780 + ... + 80761.

It is an arithmetic number, because the mean of its divisors is an integer number (39566416).

Almost surely, 2^158105131 is an apocalyptic number.

158105131 is a deficient number, since it is larger than the sum of its proper divisors (160533).

158105131 is an equidigital number, since it uses as much as digits as its factorization.

158105131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160532.

The product of its (nonzero) digits is 600, while the sum is 25.

The square root of 158105131 is about 12573.9862812077. The cubic root of 158105131 is about 540.7318962268.

Adding to 158105131 its reverse (131501851), we get a palindrome (289606982).

The spelling of 158105131 in words is "one hundred fifty-eight million, one hundred five thousand, one hundred thirty-one".