158967131 has 2 divisors, whose sum is σ = 158967132. Its totient is φ = 158967130.

The previous prime is 158967121. The next prime is 158967143. The reversal of 158967131 is 131769851.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158967131 is a prime.

It is a super-2 number, since 2×158967131² = 50541097476742322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158967121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79483565 + 79483566.

It is an arithmetic number, because the mean of its divisors is an integer number (79483566).

Almost surely, 2^158967131 is an apocalyptic number.

158967131 is a deficient number, since it is larger than the sum of its proper divisors (1).

158967131 is an equidigital number, since it uses as much as digits as its factorization.

158967131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 41.

The square root of 158967131 is about 12608.2168049253. The cubic root of 158967131 is about 541.7128181373.

The spelling of 158967131 in words is "one hundred fifty-eight million, nine hundred sixty-seven thousand, one hundred thirty-one".