161310647 has 2 divisors, whose sum is σ = 161310648. Its totient is φ = 161310646.

The previous prime is 161310623. The next prime is 161310659. The reversal of 161310647 is 746013161.

It is a strong prime.

It is an emirp because it is prime and its reverse (746013161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161310647 is a prime.

It is a super-2 number, since 2×161310647² = 52042249671117218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161315647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80655323 + 80655324.

It is an arithmetic number, because the mean of its divisors is an integer number (80655324).

Almost surely, 2^161310647 is an apocalyptic number.

161310647 is a deficient number, since it is larger than the sum of its proper divisors (1).

161310647 is an equidigital number, since it uses as much as digits as its factorization.

161310647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 161310647 is about 12700.8128480031. The cubic root of 161310647 is about 544.3618454344.

The spelling of 161310647 in words is "one hundred sixty-one million, three hundred ten thousand, six hundred forty-seven".