161012471 has 2 divisors, whose sum is σ = 161012472. Its totient is φ = 161012470.

The previous prime is 161012461. The next prime is 161012473. The reversal of 161012471 is 174210161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161012471 - 2¹⁰ = 161011447 is a prime.

It is a super-3 number, since 3×161012471³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 161012473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161012473) 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 as a sum of consecutive naturals, namely, 80506235 + 80506236.

It is an arithmetic number, because the mean of its divisors is an integer number (80506236).

Almost surely, 2^161012471 is an apocalyptic number.

161012471 is a deficient number, since it is larger than the sum of its proper divisors (1).

161012471 is an equidigital number, since it uses as much as digits as its factorization.

161012471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 161012471 is about 12689.0689571773. The cubic root of 161012471 is about 544.0262285058.

The spelling of 161012471 in words is "one hundred sixty-one million, twelve thousand, four hundred seventy-one".