158408431 has 16 divisors (see below), whose sum is σ = 172972800. Its totient is φ = 144482688.

The previous prime is 158408423. The next prime is 158408449. The reversal of 158408431 is 134804851.

It is a cyclic number.

It is not a de Polignac number, because 158408431 - 2³ = 158408423 is a prime.

It is a super-2 number, since 2×158408431² = 50186462023763522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158408531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100830 + ... + 102388.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^158408431 is an apocalyptic number.

158408431 is a deficient number, since it is larger than the sum of its proper divisors (14564369).

158408431 is a wasteful number, since it uses less digits than its factorization.

158408431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 158408431 is about 12586.0411170471. The cubic root of 158408431 is about 541.0774452563.

The spelling of 158408431 in words is "one hundred fifty-eight million, four hundred eight thousand, four hundred thirty-one".