161359423 has 2 divisors, whose sum is σ = 161359424. Its totient is φ = 161359422.

The previous prime is 161359409. The next prime is 161359439. The reversal of 161359423 is 324953161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161359423 - 2⁵ = 161359391 is a prime.

It is equal to p_9046465 and since 161359423 and 9046465 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161359453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80679711 + 80679712.

It is an arithmetic number, because the mean of its divisors is an integer number (80679712).

Almost surely, 2^161359423 is an apocalyptic number.

161359423 is a deficient number, since it is larger than the sum of its proper divisors (1).

161359423 is an equidigital number, since it uses as much as digits as its factorization.

161359423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 161359423 is about 12702.7328949325. The cubic root of 161359423 is about 544.4167066977.

The spelling of 161359423 in words is "one hundred sixty-one million, three hundred fifty-nine thousand, four hundred twenty-three".