158065731 has 12 divisors (see below), whose sum is σ = 240334120. Its totient is φ = 99830880.

The previous prime is 158065727. The next prime is 158065741. The reversal of 158065731 is 137560851.

158065731 is a `hidden beast` number, since 1 + 5 + 80 + 6 + 573 + 1 = 666.

158065731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 158065731 - 2² = 158065727 is a prime.

It is a super-2 number, since 2×158065731² = 49969550633128722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158065741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462010 + ... + 462351.

Almost surely, 2^158065731 is an apocalyptic number.

158065731 is a deficient number, since it is larger than the sum of its proper divisors (82268389).

158065731 is a wasteful number, since it uses less digits than its factorization.

158065731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924386 (or 924383 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 158065731 is about 12572.4194568905. The cubic root of 158065731 is about 540.6869754694.

The spelling of 158065731 in words is "one hundred fifty-eight million, sixty-five thousand, seven hundred thirty-one".